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Finding the Fourth Proportional to 8,987.01, 13,480.11 and 3,442.97

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Solution

The fourth proportional to 8,987.01, 13,480.11 and 3,442.97 is: 5,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.01 : 13,480.11 = 3,442.97 : x
  2. Step 2: Convert to fraction form
    8,987.01/13,480.11 = 3,442.97/x
  3. Step 3: Cross multiply
    8,987.01x = 13,480.11 × 3,442.97
  4. Step 4: Simplify right side
    8,987.01x = 46,411,546.93
  5. Step 5: Solve for x
    x = 46,411,546.93/8,987.01
  6. Step 6: Final answer
    x = 5,164.29

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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.