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Finding the Fourth Proportional to 7,605.60, 10,502.94 and 7,191.43

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Solution

The fourth proportional to 7,605.60, 10,502.94 and 7,191.43 is: 9,930.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.60 : 10,502.94 = 7,191.43 : x
  2. Step 2: Convert to fraction form
    7,605.60/10,502.94 = 7,191.43/x
  3. Step 3: Cross multiply
    7,605.60x = 10,502.94 × 7,191.43
  4. Step 4: Simplify right side
    7,605.60x = 75,531,157.80
  5. Step 5: Solve for x
    x = 75,531,157.80/7,605.60
  6. Step 6: Final answer
    x = 9,930.99

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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.