Home / 2,860.87-4,292.11-1,691.90

Finding the Fourth Proportional to 2,860.87, 4,292.11 and 1,691.90

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Solution

The fourth proportional to 2,860.87, 4,292.11 and 1,691.90 is: 2,538.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.87 : 4,292.11 = 1,691.90 : x
  2. Step 2: Convert to fraction form
    2,860.87/4,292.11 = 1,691.90/x
  3. Step 3: Cross multiply
    2,860.87x = 4,292.11 × 1,691.90
  4. Step 4: Simplify right side
    2,860.87x = 7,261,812.45
  5. Step 5: Solve for x
    x = 7,261,812.45/2,860.87
  6. Step 6: Final answer
    x = 2,538.33

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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.