Home / 8,440.20-11,650.68-6,350.40

Finding the Fourth Proportional to 8,440.20, 11,650.68 and 6,350.40

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Solution

The fourth proportional to 8,440.20, 11,650.68 and 6,350.40 is: 8,765.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.20 : 11,650.68 = 6,350.40 : x
  2. Step 2: Convert to fraction form
    8,440.20/11,650.68 = 6,350.40/x
  3. Step 3: Cross multiply
    8,440.20x = 11,650.68 × 6,350.40
  4. Step 4: Simplify right side
    8,440.20x = 73,986,478.27
  5. Step 5: Solve for x
    x = 73,986,478.27/8,440.20
  6. Step 6: Final answer
    x = 8,765.96

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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.