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Finding the Fourth Proportional to 9,130.88, 13,677.76 and 7,285.12

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Solution

The fourth proportional to 9,130.88, 13,677.76 and 7,285.12 is: 10,912.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.88 : 13,677.76 = 7,285.12 : x
  2. Step 2: Convert to fraction form
    9,130.88/13,677.76 = 7,285.12/x
  3. Step 3: Cross multiply
    9,130.88x = 13,677.76 × 7,285.12
  4. Step 4: Simplify right side
    9,130.88x = 99,644,122.93
  5. Step 5: Solve for x
    x = 99,644,122.93/9,130.88
  6. Step 6: Final answer
    x = 10,912.87

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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.