Home / 3,397.06-4,687.96-1,981.74

Finding the Fourth Proportional to 3,397.06, 4,687.96 and 1,981.74

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Solution

The fourth proportional to 3,397.06, 4,687.96 and 1,981.74 is: 2,734.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.06 : 4,687.96 = 1,981.74 : x
  2. Step 2: Convert to fraction form
    3,397.06/4,687.96 = 1,981.74/x
  3. Step 3: Cross multiply
    3,397.06x = 4,687.96 × 1,981.74
  4. Step 4: Simplify right side
    3,397.06x = 9,290,317.85
  5. Step 5: Solve for x
    x = 9,290,317.85/3,397.06
  6. Step 6: Final answer
    x = 2,734.81

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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.