Home / 2,724.20-3,758.81-1,781.37

Finding the Fourth Proportional to 2,724.20, 3,758.81 and 1,781.37

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Solution

The fourth proportional to 2,724.20, 3,758.81 and 1,781.37 is: 2,457.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.20 : 3,758.81 = 1,781.37 : x
  2. Step 2: Convert to fraction form
    2,724.20/3,758.81 = 1,781.37/x
  3. Step 3: Cross multiply
    2,724.20x = 3,758.81 × 1,781.37
  4. Step 4: Simplify right side
    2,724.20x = 6,695,822.46
  5. Step 5: Solve for x
    x = 6,695,822.46/2,724.20
  6. Step 6: Final answer
    x = 2,457.91

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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.