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Finding the Fourth Proportional to 6,604.24, 9,906.36 and 1,987.24

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Solution

The fourth proportional to 6,604.24, 9,906.36 and 1,987.24 is: 2,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.24 : 9,906.36 = 1,987.24 : x
  2. Step 2: Convert to fraction form
    6,604.24/9,906.36 = 1,987.24/x
  3. Step 3: Cross multiply
    6,604.24x = 9,906.36 × 1,987.24
  4. Step 4: Simplify right side
    6,604.24x = 19,686,314.85
  5. Step 5: Solve for x
    x = 19,686,314.85/6,604.24
  6. Step 6: Final answer
    x = 2,980.86

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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.