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Finding the Fourth Proportional to 7,929.07, 11,874.70 and 4,757.65

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Solution

The fourth proportional to 7,929.07, 11,874.70 and 4,757.65 is: 7,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.07 : 11,874.70 = 4,757.65 : x
  2. Step 2: Convert to fraction form
    7,929.07/11,874.70 = 4,757.65/x
  3. Step 3: Cross multiply
    7,929.07x = 11,874.70 × 4,757.65
  4. Step 4: Simplify right side
    7,929.07x = 56,495,666.46
  5. Step 5: Solve for x
    x = 56,495,666.46/7,929.07
  6. Step 6: Final answer
    x = 7,125.13

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1.5x scale

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.