Home / 2,867.68-3,957.69-1,689.13

Finding the Fourth Proportional to 2,867.68, 3,957.69 and 1,689.13

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Solution

The fourth proportional to 2,867.68, 3,957.69 and 1,689.13 is: 2,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.68 : 3,957.69 = 1,689.13 : x
  2. Step 2: Convert to fraction form
    2,867.68/3,957.69 = 1,689.13/x
  3. Step 3: Cross multiply
    2,867.68x = 3,957.69 × 1,689.13
  4. Step 4: Simplify right side
    2,867.68x = 6,685,052.91
  5. Step 5: Solve for x
    x = 6,685,052.91/2,867.68
  6. Step 6: Final answer
    x = 2,331.17

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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.