Home / 2,891.57-3,990.33-1,565.24

Finding the Fourth Proportional to 2,891.57, 3,990.33 and 1,565.24

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Solution

The fourth proportional to 2,891.57, 3,990.33 and 1,565.24 is: 2,160.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.57 : 3,990.33 = 1,565.24 : x
  2. Step 2: Convert to fraction form
    2,891.57/3,990.33 = 1,565.24/x
  3. Step 3: Cross multiply
    2,891.57x = 3,990.33 × 1,565.24
  4. Step 4: Simplify right side
    2,891.57x = 6,245,804.18
  5. Step 5: Solve for x
    x = 6,245,804.18/2,891.57
  6. Step 6: Final answer
    x = 2,160.01

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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.