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Finding the Fourth Proportional to 8,534.76, 12,799.55 and 2,987.07

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Solution

The fourth proportional to 8,534.76, 12,799.55 and 2,987.07 is: 4,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,534.76 : 12,799.55 = 2,987.07 : x
  2. Step 2: Convert to fraction form
    8,534.76/12,799.55 = 2,987.07/x
  3. Step 3: Cross multiply
    8,534.76x = 12,799.55 × 2,987.07
  4. Step 4: Simplify right side
    8,534.76x = 38,233,151.82
  5. Step 5: Solve for x
    x = 38,233,151.82/8,534.76
  6. Step 6: Final answer
    x = 4,479.70

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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.