Home / 3,167.91-4,371.98-1,990.17

Finding the Fourth Proportional to 3,167.91, 4,371.98 and 1,990.17

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Solution

The fourth proportional to 3,167.91, 4,371.98 and 1,990.17 is: 2,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.91 : 4,371.98 = 1,990.17 : x
  2. Step 2: Convert to fraction form
    3,167.91/4,371.98 = 1,990.17/x
  3. Step 3: Cross multiply
    3,167.91x = 4,371.98 × 1,990.17
  4. Step 4: Simplify right side
    3,167.91x = 8,700,973.49
  5. Step 5: Solve for x
    x = 8,700,973.49/3,167.91
  6. Step 6: Final answer
    x = 2,746.60

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1.5x scale

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.