Home / 8,288.78-12,432.10-2,740.76

Finding the Fourth Proportional to 8,288.78, 12,432.10 and 2,740.76

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Solution

The fourth proportional to 8,288.78, 12,432.10 and 2,740.76 is: 4,110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.78 : 12,432.10 = 2,740.76 : x
  2. Step 2: Convert to fraction form
    8,288.78/12,432.10 = 2,740.76/x
  3. Step 3: Cross multiply
    8,288.78x = 12,432.10 × 2,740.76
  4. Step 4: Simplify right side
    8,288.78x = 34,073,402.40
  5. Step 5: Solve for x
    x = 34,073,402.40/8,288.78
  6. Step 6: Final answer
    x = 4,110.79

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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.