Home / 8,320.32-12,470.76-4,423.68

Finding the Fourth Proportional to 8,320.32, 12,470.76 and 4,423.68

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Solution

The fourth proportional to 8,320.32, 12,470.76 and 4,423.68 is: 6,630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.32 : 12,470.76 = 4,423.68 : x
  2. Step 2: Convert to fraction form
    8,320.32/12,470.76 = 4,423.68/x
  3. Step 3: Cross multiply
    8,320.32x = 12,470.76 × 4,423.68
  4. Step 4: Simplify right side
    8,320.32x = 55,166,651.60
  5. Step 5: Solve for x
    x = 55,166,651.60/8,320.32
  6. Step 6: Final answer
    x = 6,630.35

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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.