Home / 3,147.08-4,343.76-2,152.76

Finding the Fourth Proportional to 3,147.08, 4,343.76 and 2,152.76

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Solution

The fourth proportional to 3,147.08, 4,343.76 and 2,152.76 is: 2,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.08 : 4,343.76 = 2,152.76 : x
  2. Step 2: Convert to fraction form
    3,147.08/4,343.76 = 2,152.76/x
  3. Step 3: Cross multiply
    3,147.08x = 4,343.76 × 2,152.76
  4. Step 4: Simplify right side
    3,147.08x = 9,351,072.78
  5. Step 5: Solve for x
    x = 9,351,072.78/3,147.08
  6. Step 6: Final answer
    x = 2,971.35

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Find fourth proportional to 1,573.54, 2,171.88 and 1,076.38
Half scale
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Double scale
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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.