Home / 3,981.40-5,971.38-1,348.63

Finding the Fourth Proportional to 3,981.40, 5,971.38 and 1,348.63

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Solution

The fourth proportional to 3,981.40, 5,971.38 and 1,348.63 is: 2,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.40 : 5,971.38 = 1,348.63 : x
  2. Step 2: Convert to fraction form
    3,981.40/5,971.38 = 1,348.63/x
  3. Step 3: Cross multiply
    3,981.40x = 5,971.38 × 1,348.63
  4. Step 4: Simplify right side
    3,981.40x = 8,053,182.21
  5. Step 5: Solve for x
    x = 8,053,182.21/3,981.40
  6. Step 6: Final answer
    x = 2,022.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.