Home / 6,620.29-9,930.42-1,689.93

Finding the Fourth Proportional to 6,620.29, 9,930.42 and 1,689.93

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Solution

The fourth proportional to 6,620.29, 9,930.42 and 1,689.93 is: 2,534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.29 : 9,930.42 = 1,689.93 : x
  2. Step 2: Convert to fraction form
    6,620.29/9,930.42 = 1,689.93/x
  3. Step 3: Cross multiply
    6,620.29x = 9,930.42 × 1,689.93
  4. Step 4: Simplify right side
    6,620.29x = 16,781,662.91
  5. Step 5: Solve for x
    x = 16,781,662.91/6,620.29
  6. Step 6: Final answer
    x = 2,534.89

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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.