Home / 2,981.88-4,114.85-1,722.97

Finding the Fourth Proportional to 2,981.88, 4,114.85 and 1,722.97

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Solution

The fourth proportional to 2,981.88, 4,114.85 and 1,722.97 is: 2,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.88 : 4,114.85 = 1,722.97 : x
  2. Step 2: Convert to fraction form
    2,981.88/4,114.85 = 1,722.97/x
  3. Step 3: Cross multiply
    2,981.88x = 4,114.85 × 1,722.97
  4. Step 4: Simplify right side
    2,981.88x = 7,089,769.32
  5. Step 5: Solve for x
    x = 7,089,769.32/2,981.88
  6. Step 6: Final answer
    x = 2,377.62

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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.