Home / 2,686.80-4,030.92-1,125.96

Finding the Fourth Proportional to 2,686.80, 4,030.92 and 1,125.96

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Solution

The fourth proportional to 2,686.80, 4,030.92 and 1,125.96 is: 1,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.80 : 4,030.92 = 1,125.96 : x
  2. Step 2: Convert to fraction form
    2,686.80/4,030.92 = 1,125.96/x
  3. Step 3: Cross multiply
    2,686.80x = 4,030.92 × 1,125.96
  4. Step 4: Simplify right side
    2,686.80x = 4,538,654.68
  5. Step 5: Solve for x
    x = 4,538,654.68/2,686.80
  6. Step 6: Final answer
    x = 1,689.24

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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.