Home / 6,620.18-9,930.26-1,689.82

Finding the Fourth Proportional to 6,620.18, 9,930.26 and 1,689.82

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Solution

The fourth proportional to 6,620.18, 9,930.26 and 1,689.82 is: 2,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.18 : 9,930.26 = 1,689.82 : x
  2. Step 2: Convert to fraction form
    6,620.18/9,930.26 = 1,689.82/x
  3. Step 3: Cross multiply
    6,620.18x = 9,930.26 × 1,689.82
  4. Step 4: Simplify right side
    6,620.18x = 16,780,293.85
  5. Step 5: Solve for x
    x = 16,780,293.85/6,620.18
  6. Step 6: Final answer
    x = 2,534.72

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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.