Home / 3,120.76-4,304.82-2,002.60

Finding the Fourth Proportional to 3,120.76, 4,304.82 and 2,002.60

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Solution

The fourth proportional to 3,120.76, 4,304.82 and 2,002.60 is: 2,762.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.76 : 4,304.82 = 2,002.60 : x
  2. Step 2: Convert to fraction form
    3,120.76/4,304.82 = 2,002.60/x
  3. Step 3: Cross multiply
    3,120.76x = 4,304.82 × 2,002.60
  4. Step 4: Simplify right side
    3,120.76x = 8,620,832.53
  5. Step 5: Solve for x
    x = 8,620,832.53/3,120.76
  6. Step 6: Final answer
    x = 2,762.41

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Find fourth proportional to 1,560.38, 2,152.41 and 1,001.30
Half scale
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Double scale
Find fourth proportional to 3,121.76, 4,306.20 and 2,003.60
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.