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Finding the Fourth Proportional to 9,166.52, 12,683.13 and 7,990.04

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Solution

The fourth proportional to 9,166.52, 12,683.13 and 7,990.04 is: 11,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,166.52 : 12,683.13 = 7,990.04 : x
  2. Step 2: Convert to fraction form
    9,166.52/12,683.13 = 7,990.04/x
  3. Step 3: Cross multiply
    9,166.52x = 12,683.13 × 7,990.04
  4. Step 4: Simplify right side
    9,166.52x = 101,338,716.03
  5. Step 5: Solve for x
    x = 101,338,716.03/9,166.52
  6. Step 6: Final answer
    x = 11,055.31

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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.