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Finding the Fourth Proportional to 8,799.32, 13,167.55 and 7,642.95

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Solution

The fourth proportional to 8,799.32, 13,167.55 and 7,642.95 is: 11,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.32 : 13,167.55 = 7,642.95 : x
  2. Step 2: Convert to fraction form
    8,799.32/13,167.55 = 7,642.95/x
  3. Step 3: Cross multiply
    8,799.32x = 13,167.55 × 7,642.95
  4. Step 4: Simplify right side
    8,799.32x = 100,638,907.17
  5. Step 5: Solve for x
    x = 100,638,907.17/8,799.32
  6. Step 6: Final answer
    x = 11,437.12

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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.