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Finding the Fourth Proportional to 8,691.32, 12,973.37 and 7,466.60

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Solution

The fourth proportional to 8,691.32, 12,973.37 and 7,466.60 is: 11,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.32 : 12,973.37 = 7,466.60 : x
  2. Step 2: Convert to fraction form
    8,691.32/12,973.37 = 7,466.60/x
  3. Step 3: Cross multiply
    8,691.32x = 12,973.37 × 7,466.60
  4. Step 4: Simplify right side
    8,691.32x = 96,866,959.54
  5. Step 5: Solve for x
    x = 96,866,959.54/8,691.32
  6. Step 6: Final answer
    x = 11,145.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.