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Finding the Fourth Proportional to 8,861, 12,230.34 and 5,137.16

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Solution

The fourth proportional to 8,861, 12,230.34 and 5,137.16 is: 7,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861 : 12,230.34 = 5,137.16 : x
  2. Step 2: Convert to fraction form
    8,861/12,230.34 = 5,137.16/x
  3. Step 3: Cross multiply
    8,861x = 12,230.34 × 5,137.16
  4. Step 4: Simplify right side
    8,861x = 62,829,213.43
  5. Step 5: Solve for x
    x = 62,829,213.43/8,861
  6. Step 6: Final answer
    x = 7,090.53

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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.