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Finding the Fourth Proportional to 8,486.16, 11,706.08 and 5,127.90

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Solution

The fourth proportional to 8,486.16, 11,706.08 and 5,127.90 is: 7,073.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.16 : 11,706.08 = 5,127.90 : x
  2. Step 2: Convert to fraction form
    8,486.16/11,706.08 = 5,127.90/x
  3. Step 3: Cross multiply
    8,486.16x = 11,706.08 × 5,127.90
  4. Step 4: Simplify right side
    8,486.16x = 60,027,607.63
  5. Step 5: Solve for x
    x = 60,027,607.63/8,486.16
  6. Step 6: Final answer
    x = 7,073.59

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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.