Home / 3,981.39-5,494.92-2,866.02

Finding the Fourth Proportional to 3,981.39, 5,494.92 and 2,866.02

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Solution

The fourth proportional to 3,981.39, 5,494.92 and 2,866.02 is: 3,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.39 : 5,494.92 = 2,866.02 : x
  2. Step 2: Convert to fraction form
    3,981.39/5,494.92 = 2,866.02/x
  3. Step 3: Cross multiply
    3,981.39x = 5,494.92 × 2,866.02
  4. Step 4: Simplify right side
    3,981.39x = 15,748,508.81
  5. Step 5: Solve for x
    x = 15,748,508.81/3,981.39
  6. Step 6: Final answer
    x = 3,955.54

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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.