Home / 4,929.28-7,389.12-4,006.72

Finding the Fourth Proportional to 4,929.28, 7,389.12 and 4,006.72

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Solution

The fourth proportional to 4,929.28, 7,389.12 and 4,006.72 is: 6,006.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929.28 : 7,389.12 = 4,006.72 : x
  2. Step 2: Convert to fraction form
    4,929.28/7,389.12 = 4,006.72/x
  3. Step 3: Cross multiply
    4,929.28x = 7,389.12 × 4,006.72
  4. Step 4: Simplify right side
    4,929.28x = 29,606,134.89
  5. Step 5: Solve for x
    x = 29,606,134.89/4,929.28
  6. Step 6: Final answer
    x = 6,006.18

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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.