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Finding the Fourth Proportional to 8,143.68, 11,238.10 and 4,509.62

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Solution

The fourth proportional to 8,143.68, 11,238.10 and 4,509.62 is: 6,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.68 : 11,238.10 = 4,509.62 : x
  2. Step 2: Convert to fraction form
    8,143.68/11,238.10 = 4,509.62/x
  3. Step 3: Cross multiply
    8,143.68x = 11,238.10 × 4,509.62
  4. Step 4: Simplify right side
    8,143.68x = 50,679,560.52
  5. Step 5: Solve for x
    x = 50,679,560.52/8,143.68
  6. Step 6: Final answer
    x = 6,223.18

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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.