Home / 3,929.12-5,887.20-2,281.04

Finding the Fourth Proportional to 3,929.12, 5,887.20 and 2,281.04

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Solution

The fourth proportional to 3,929.12, 5,887.20 and 2,281.04 is: 3,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.12 : 5,887.20 = 2,281.04 : x
  2. Step 2: Convert to fraction form
    3,929.12/5,887.20 = 2,281.04/x
  3. Step 3: Cross multiply
    3,929.12x = 5,887.20 × 2,281.04
  4. Step 4: Simplify right side
    3,929.12x = 13,428,938.69
  5. Step 5: Solve for x
    x = 13,428,938.69/3,929.12
  6. Step 6: Final answer
    x = 3,417.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.