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Finding the Fourth Proportional to 7,279.29, 10,920.29 and 4,816.17

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Solution

The fourth proportional to 7,279.29, 10,920.29 and 4,816.17 is: 7,225.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.29 : 10,920.29 = 4,816.17 : x
  2. Step 2: Convert to fraction form
    7,279.29/10,920.29 = 4,816.17/x
  3. Step 3: Cross multiply
    7,279.29x = 10,920.29 × 4,816.17
  4. Step 4: Simplify right side
    7,279.29x = 52,593,949.01
  5. Step 5: Solve for x
    x = 52,593,949.01/7,279.29
  6. Step 6: Final answer
    x = 7,225.15

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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.