Home / 6,644.40-9,966.60-5,089.20

Finding the Fourth Proportional to 6,644.40, 9,966.60 and 5,089.20

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Solution

The fourth proportional to 6,644.40, 9,966.60 and 5,089.20 is: 7,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.40 : 9,966.60 = 5,089.20 : x
  2. Step 2: Convert to fraction form
    6,644.40/9,966.60 = 5,089.20/x
  3. Step 3: Cross multiply
    6,644.40x = 9,966.60 × 5,089.20
  4. Step 4: Simplify right side
    6,644.40x = 50,722,020.72
  5. Step 5: Solve for x
    x = 50,722,020.72/6,644.40
  6. Step 6: Final answer
    x = 7,633.80

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Double scale
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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.