Home / 6,115.23-8,439-3,320.73

Finding the Fourth Proportional to 6,115.23, 8,439 and 3,320.73

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Solution

The fourth proportional to 6,115.23, 8,439 and 3,320.73 is: 4,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.23 : 8,439 = 3,320.73 : x
  2. Step 2: Convert to fraction form
    6,115.23/8,439 = 3,320.73/x
  3. Step 3: Cross multiply
    6,115.23x = 8,439 × 3,320.73
  4. Step 4: Simplify right side
    6,115.23x = 28,023,640.47
  5. Step 5: Solve for x
    x = 28,023,640.47/6,115.23
  6. Step 6: Final answer
    x = 4,582.60

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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.