Home / 7,815.20-10,793.28-6,337.76

Finding the Fourth Proportional to 7,815.20, 10,793.28 and 6,337.76

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Solution

The fourth proportional to 7,815.20, 10,793.28 and 6,337.76 is: 8,752.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.20 : 10,793.28 = 6,337.76 : x
  2. Step 2: Convert to fraction form
    7,815.20/10,793.28 = 6,337.76/x
  3. Step 3: Cross multiply
    7,815.20x = 10,793.28 × 6,337.76
  4. Step 4: Simplify right side
    7,815.20x = 68,405,218.25
  5. Step 5: Solve for x
    x = 68,405,218.25/7,815.20
  6. Step 6: Final answer
    x = 8,752.84

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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.