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Finding the Fourth Proportional to 9,171.74, 12,657.18 and 5,987.07

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Solution

The fourth proportional to 9,171.74, 12,657.18 and 5,987.07 is: 8,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.74 : 12,657.18 = 5,987.07 : x
  2. Step 2: Convert to fraction form
    9,171.74/12,657.18 = 5,987.07/x
  3. Step 3: Cross multiply
    9,171.74x = 12,657.18 × 5,987.07
  4. Step 4: Simplify right side
    9,171.74x = 75,779,422.66
  5. Step 5: Solve for x
    x = 75,779,422.66/9,171.74
  6. Step 6: Final answer
    x = 8,262.27

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.