Home / 7,284.28-10,929.48-3,125.20

Finding the Fourth Proportional to 7,284.28, 10,929.48 and 3,125.20

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Solution

The fourth proportional to 7,284.28, 10,929.48 and 3,125.20 is: 4,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,284.28 : 10,929.48 = 3,125.20 : x
  2. Step 2: Convert to fraction form
    7,284.28/10,929.48 = 3,125.20/x
  3. Step 3: Cross multiply
    7,284.28x = 10,929.48 × 3,125.20
  4. Step 4: Simplify right side
    7,284.28x = 34,156,810.90
  5. Step 5: Solve for x
    x = 34,156,810.90/7,284.28
  6. Step 6: Final answer
    x = 4,689.11

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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.