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Finding the Fourth Proportional to 8,617.15, 12,839.04 and 8,051.32

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Solution

The fourth proportional to 8,617.15, 12,839.04 and 8,051.32 is: 11,995.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.15 : 12,839.04 = 8,051.32 : x
  2. Step 2: Convert to fraction form
    8,617.15/12,839.04 = 8,051.32/x
  3. Step 3: Cross multiply
    8,617.15x = 12,839.04 × 8,051.32
  4. Step 4: Simplify right side
    8,617.15x = 103,371,219.53
  5. Step 5: Solve for x
    x = 103,371,219.53/8,617.15
  6. Step 6: Final answer
    x = 11,995.99

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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.