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Finding the Fourth Proportional to 6,610.89, 9,917.54 and 5,389.14

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Solution

The fourth proportional to 6,610.89, 9,917.54 and 5,389.14 is: 8,084.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.89 : 9,917.54 = 5,389.14 : x
  2. Step 2: Convert to fraction form
    6,610.89/9,917.54 = 5,389.14/x
  3. Step 3: Cross multiply
    6,610.89x = 9,917.54 × 5,389.14
  4. Step 4: Simplify right side
    6,610.89x = 53,447,011.52
  5. Step 5: Solve for x
    x = 53,447,011.52/6,610.89
  6. Step 6: Final answer
    x = 8,084.69

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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.