Home / 6,115.12-8,438.88-3,320.56

Finding the Fourth Proportional to 6,115.12, 8,438.88 and 3,320.56

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Solution

The fourth proportional to 6,115.12, 8,438.88 and 3,320.56 is: 4,582.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.12 : 8,438.88 = 3,320.56 : x
  2. Step 2: Convert to fraction form
    6,115.12/8,438.88 = 3,320.56/x
  3. Step 3: Cross multiply
    6,115.12x = 8,438.88 × 3,320.56
  4. Step 4: Simplify right side
    6,115.12x = 28,021,807.37
  5. Step 5: Solve for x
    x = 28,021,807.37/6,115.12
  6. Step 6: Final answer
    x = 4,582.38

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Half scale
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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.