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Finding the Fourth Proportional to 7,809.66, 11,715.84 and 2,545.92

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Solution

The fourth proportional to 7,809.66, 11,715.84 and 2,545.92 is: 3,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.66 : 11,715.84 = 2,545.92 : x
  2. Step 2: Convert to fraction form
    7,809.66/11,715.84 = 2,545.92/x
  3. Step 3: Cross multiply
    7,809.66x = 11,715.84 × 2,545.92
  4. Step 4: Simplify right side
    7,809.66x = 29,827,591.37
  5. Step 5: Solve for x
    x = 29,827,591.37/7,809.66
  6. Step 6: Final answer
    x = 3,819.32

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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.