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Finding the Fourth Proportional to 7,613.40, 11,403.56 and 7,427.54

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Solution

The fourth proportional to 7,613.40, 11,403.56 and 7,427.54 is: 11,125.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,613.40 : 11,403.56 = 7,427.54 : x
  2. Step 2: Convert to fraction form
    7,613.40/11,403.56 = 7,427.54/x
  3. Step 3: Cross multiply
    7,613.40x = 11,403.56 × 7,427.54
  4. Step 4: Simplify right side
    7,613.40x = 84,700,398.04
  5. Step 5: Solve for x
    x = 84,700,398.04/7,613.40
  6. Step 6: Final answer
    x = 11,125.17

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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.