Home / 6,469.20-9,703.80-5,715.90

Finding the Fourth Proportional to 6,469.20, 9,703.80 and 5,715.90

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Solution

The fourth proportional to 6,469.20, 9,703.80 and 5,715.90 is: 8,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,469.20 : 9,703.80 = 5,715.90 : x
  2. Step 2: Convert to fraction form
    6,469.20/9,703.80 = 5,715.90/x
  3. Step 3: Cross multiply
    6,469.20x = 9,703.80 × 5,715.90
  4. Step 4: Simplify right side
    6,469.20x = 55,465,950.42
  5. Step 5: Solve for x
    x = 55,465,950.42/6,469.20
  6. Step 6: Final answer
    x = 8,573.85

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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.