Home / 6,621.40-9,932.10-2,919.70

Finding the Fourth Proportional to 6,621.40, 9,932.10 and 2,919.70

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Solution

The fourth proportional to 6,621.40, 9,932.10 and 2,919.70 is: 4,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.40 : 9,932.10 = 2,919.70 : x
  2. Step 2: Convert to fraction form
    6,621.40/9,932.10 = 2,919.70/x
  3. Step 3: Cross multiply
    6,621.40x = 9,932.10 × 2,919.70
  4. Step 4: Simplify right side
    6,621.40x = 28,998,752.37
  5. Step 5: Solve for x
    x = 28,998,752.37/6,621.40
  6. Step 6: Final answer
    x = 4,379.55

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Similar ratio
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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.