Home / 2,892.15-3,991.16-1,565.85

Finding the Fourth Proportional to 2,892.15, 3,991.16 and 1,565.85

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Solution

The fourth proportional to 2,892.15, 3,991.16 and 1,565.85 is: 2,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.15 : 3,991.16 = 1,565.85 : x
  2. Step 2: Convert to fraction form
    2,892.15/3,991.16 = 1,565.85/x
  3. Step 3: Cross multiply
    2,892.15x = 3,991.16 × 1,565.85
  4. Step 4: Simplify right side
    2,892.15x = 6,249,567.96
  5. Step 5: Solve for x
    x = 6,249,567.96/2,892.15
  6. Step 6: Final answer
    x = 2,160.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.