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Finding the Fourth Proportional to 8,639.54, 12,957.84 and 2,314.46

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Solution

The fourth proportional to 8,639.54, 12,957.84 and 2,314.46 is: 3,471.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.54 : 12,957.84 = 2,314.46 : x
  2. Step 2: Convert to fraction form
    8,639.54/12,957.84 = 2,314.46/x
  3. Step 3: Cross multiply
    8,639.54x = 12,957.84 × 2,314.46
  4. Step 4: Simplify right side
    8,639.54x = 29,990,402.37
  5. Step 5: Solve for x
    x = 29,990,402.37/8,639.54
  6. Step 6: Final answer
    x = 3,471.30

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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.