Home / 3,812.90-5,261.37-2,320.88

Finding the Fourth Proportional to 3,812.90, 5,261.37 and 2,320.88

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Solution

The fourth proportional to 3,812.90, 5,261.37 and 2,320.88 is: 3,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.90 : 5,261.37 = 2,320.88 : x
  2. Step 2: Convert to fraction form
    3,812.90/5,261.37 = 2,320.88/x
  3. Step 3: Cross multiply
    3,812.90x = 5,261.37 × 2,320.88
  4. Step 4: Simplify right side
    3,812.90x = 12,211,008.41
  5. Step 5: Solve for x
    x = 12,211,008.41/3,812.90
  6. Step 6: Final answer
    x = 3,202.55

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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.