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Finding the Fourth Proportional to 8,639.01, 12,956.90 and 3,092.13

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Solution

The fourth proportional to 8,639.01, 12,956.90 and 3,092.13 is: 4,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.01 : 12,956.90 = 3,092.13 : x
  2. Step 2: Convert to fraction form
    8,639.01/12,956.90 = 3,092.13/x
  3. Step 3: Cross multiply
    8,639.01x = 12,956.90 × 3,092.13
  4. Step 4: Simplify right side
    8,639.01x = 40,064,403.74
  5. Step 5: Solve for x
    x = 40,064,403.74/8,639.01
  6. Step 6: Final answer
    x = 4,637.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.