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Finding the Fourth Proportional to 8,886.67, 12,252.18 and 7,287.55

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Solution

The fourth proportional to 8,886.67, 12,252.18 and 7,287.55 is: 10,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.67 : 12,252.18 = 7,287.55 : x
  2. Step 2: Convert to fraction form
    8,886.67/12,252.18 = 7,287.55/x
  3. Step 3: Cross multiply
    8,886.67x = 12,252.18 × 7,287.55
  4. Step 4: Simplify right side
    8,886.67x = 89,288,374.36
  5. Step 5: Solve for x
    x = 89,288,374.36/8,886.67
  6. Step 6: Final answer
    x = 10,047.45

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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.