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Finding the Fourth Proportional to 6,645.85, 9,957.07 and 5,921.87

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Solution

The fourth proportional to 6,645.85, 9,957.07 and 5,921.87 is: 8,872.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.85 : 9,957.07 = 5,921.87 : x
  2. Step 2: Convert to fraction form
    6,645.85/9,957.07 = 5,921.87/x
  3. Step 3: Cross multiply
    6,645.85x = 9,957.07 × 5,921.87
  4. Step 4: Simplify right side
    6,645.85x = 58,964,431.74
  5. Step 5: Solve for x
    x = 58,964,431.74/6,645.85
  6. Step 6: Final answer
    x = 8,872.37

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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.