Home / 8,281.50-11,432.70-6,388.83

Finding the Fourth Proportional to 8,281.50, 11,432.70 and 6,388.83

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Solution

The fourth proportional to 8,281.50, 11,432.70 and 6,388.83 is: 8,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.50 : 11,432.70 = 6,388.83 : x
  2. Step 2: Convert to fraction form
    8,281.50/11,432.70 = 6,388.83/x
  3. Step 3: Cross multiply
    8,281.50x = 11,432.70 × 6,388.83
  4. Step 4: Simplify right side
    8,281.50x = 73,041,576.74
  5. Step 5: Solve for x
    x = 73,041,576.74/8,281.50
  6. Step 6: Final answer
    x = 8,819.85

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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.