Home / 3,145.12-4,343.80-2,724.78

Finding the Fourth Proportional to 3,145.12, 4,343.80 and 2,724.78

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Solution

The fourth proportional to 3,145.12, 4,343.80 and 2,724.78 is: 3,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.12 : 4,343.80 = 2,724.78 : x
  2. Step 2: Convert to fraction form
    3,145.12/4,343.80 = 2,724.78/x
  3. Step 3: Cross multiply
    3,145.12x = 4,343.80 × 2,724.78
  4. Step 4: Simplify right side
    3,145.12x = 11,835,899.36
  5. Step 5: Solve for x
    x = 11,835,899.36/3,145.12
  6. Step 6: Final answer
    x = 3,763.26

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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.