Home / 3,439.80-5,158.62-1,247.99

Finding the Fourth Proportional to 3,439.80, 5,158.62 and 1,247.99

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Solution

The fourth proportional to 3,439.80, 5,158.62 and 1,247.99 is: 1,871.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.80 : 5,158.62 = 1,247.99 : x
  2. Step 2: Convert to fraction form
    3,439.80/5,158.62 = 1,247.99/x
  3. Step 3: Cross multiply
    3,439.80x = 5,158.62 × 1,247.99
  4. Step 4: Simplify right side
    3,439.80x = 6,437,880.38
  5. Step 5: Solve for x
    x = 6,437,880.38/3,439.80
  6. Step 6: Final answer
    x = 1,871.59

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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.