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Finding the Fourth Proportional to 8,677.48, 12,987.42 and 6,934.12

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Solution

The fourth proportional to 8,677.48, 12,987.42 and 6,934.12 is: 10,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,677.48 : 12,987.42 = 6,934.12 : x
  2. Step 2: Convert to fraction form
    8,677.48/12,987.42 = 6,934.12/x
  3. Step 3: Cross multiply
    8,677.48x = 12,987.42 × 6,934.12
  4. Step 4: Simplify right side
    8,677.48x = 90,056,328.77
  5. Step 5: Solve for x
    x = 90,056,328.77/8,677.48
  6. Step 6: Final answer
    x = 10,378.17

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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.