Home / 3,439.36-5,158.80-1,247.68

Finding the Fourth Proportional to 3,439.36, 5,158.80 and 1,247.68

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Solution

The fourth proportional to 3,439.36, 5,158.80 and 1,247.68 is: 1,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.36 : 5,158.80 = 1,247.68 : x
  2. Step 2: Convert to fraction form
    3,439.36/5,158.80 = 1,247.68/x
  3. Step 3: Cross multiply
    3,439.36x = 5,158.80 × 1,247.68
  4. Step 4: Simplify right side
    3,439.36x = 6,436,531.58
  5. Step 5: Solve for x
    x = 6,436,531.58/3,439.36
  6. Step 6: Final answer
    x = 1,871.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.