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Finding the Fourth Proportional to 7,207.92, 9,918.05 and 5,528.66

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Solution

The fourth proportional to 7,207.92, 9,918.05 and 5,528.66 is: 7,607.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.92 : 9,918.05 = 5,528.66 : x
  2. Step 2: Convert to fraction form
    7,207.92/9,918.05 = 5,528.66/x
  3. Step 3: Cross multiply
    7,207.92x = 9,918.05 × 5,528.66
  4. Step 4: Simplify right side
    7,207.92x = 54,833,449.08
  5. Step 5: Solve for x
    x = 54,833,449.08/7,207.92
  6. Step 6: Final answer
    x = 7,607.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.