Home / 8,150.40-12,240.45-4,869.90

Finding the Fourth Proportional to 8,150.40, 12,240.45 and 4,869.90

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Solution

The fourth proportional to 8,150.40, 12,240.45 and 4,869.90 is: 7,313.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150.40 : 12,240.45 = 4,869.90 : x
  2. Step 2: Convert to fraction form
    8,150.40/12,240.45 = 4,869.90/x
  3. Step 3: Cross multiply
    8,150.40x = 12,240.45 × 4,869.90
  4. Step 4: Simplify right side
    8,150.40x = 59,609,767.46
  5. Step 5: Solve for x
    x = 59,609,767.46/8,150.40
  6. Step 6: Final answer
    x = 7,313.72

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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.