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Finding the Fourth Proportional to 8,700.18, 12,000.04 and 6,143.82

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Solution

The fourth proportional to 8,700.18, 12,000.04 and 6,143.82 is: 8,474.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.18 : 12,000.04 = 6,143.82 : x
  2. Step 2: Convert to fraction form
    8,700.18/12,000.04 = 6,143.82/x
  3. Step 3: Cross multiply
    8,700.18x = 12,000.04 × 6,143.82
  4. Step 4: Simplify right side
    8,700.18x = 73,726,085.75
  5. Step 5: Solve for x
    x = 73,726,085.75/8,700.18
  6. Step 6: Final answer
    x = 8,474.09

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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.