Home / 4,112.57-5,680.33-2,991.74

Finding the Fourth Proportional to 4,112.57, 5,680.33 and 2,991.74

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Solution

The fourth proportional to 4,112.57, 5,680.33 and 2,991.74 is: 4,132.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.57 : 5,680.33 = 2,991.74 : x
  2. Step 2: Convert to fraction form
    4,112.57/5,680.33 = 2,991.74/x
  3. Step 3: Cross multiply
    4,112.57x = 5,680.33 × 2,991.74
  4. Step 4: Simplify right side
    4,112.57x = 16,994,034.59
  5. Step 5: Solve for x
    x = 16,994,034.59/4,112.57
  6. Step 6: Final answer
    x = 4,132.22

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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.