Home / 8,435.20-12,657.92-3,818.24

Finding the Fourth Proportional to 8,435.20, 12,657.92 and 3,818.24

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Solution

The fourth proportional to 8,435.20, 12,657.92 and 3,818.24 is: 5,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.20 : 12,657.92 = 3,818.24 : x
  2. Step 2: Convert to fraction form
    8,435.20/12,657.92 = 3,818.24/x
  3. Step 3: Cross multiply
    8,435.20x = 12,657.92 × 3,818.24
  4. Step 4: Simplify right side
    8,435.20x = 48,330,976.46
  5. Step 5: Solve for x
    x = 48,330,976.46/8,435.20
  6. Step 6: Final answer
    x = 5,729.68

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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.