Home / 2,981.22-4,116.14-1,862.70

Finding the Fourth Proportional to 2,981.22, 4,116.14 and 1,862.70

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Solution

The fourth proportional to 2,981.22, 4,116.14 and 1,862.70 is: 2,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.22 : 4,116.14 = 1,862.70 : x
  2. Step 2: Convert to fraction form
    2,981.22/4,116.14 = 1,862.70/x
  3. Step 3: Cross multiply
    2,981.22x = 4,116.14 × 1,862.70
  4. Step 4: Simplify right side
    2,981.22x = 7,667,124.66
  5. Step 5: Solve for x
    x = 7,667,124.66/2,981.22
  6. Step 6: Final answer
    x = 2,571.81

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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.