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Finding the Fourth Proportional to 9,134.59, 12,605.73 and 5,156.54

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Solution

The fourth proportional to 9,134.59, 12,605.73 and 5,156.54 is: 7,116.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,134.59 : 12,605.73 = 5,156.54 : x
  2. Step 2: Convert to fraction form
    9,134.59/12,605.73 = 5,156.54/x
  3. Step 3: Cross multiply
    9,134.59x = 12,605.73 × 5,156.54
  4. Step 4: Simplify right side
    9,134.59x = 65,001,950.97
  5. Step 5: Solve for x
    x = 65,001,950.97/9,134.59
  6. Step 6: Final answer
    x = 7,116.02

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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.