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Finding the Fourth Proportional to 6,644.60, 9,966.90 and 5,575.40

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Solution

The fourth proportional to 6,644.60, 9,966.90 and 5,575.40 is: 8,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.60 : 9,966.90 = 5,575.40 : x
  2. Step 2: Convert to fraction form
    6,644.60/9,966.90 = 5,575.40/x
  3. Step 3: Cross multiply
    6,644.60x = 9,966.90 × 5,575.40
  4. Step 4: Simplify right side
    6,644.60x = 55,569,454.26
  5. Step 5: Solve for x
    x = 55,569,454.26/6,644.60
  6. Step 6: Final answer
    x = 8,363.10

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Similar ratio
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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.