Home / 2,439.30-3,366.18-1,391.25

Finding the Fourth Proportional to 2,439.30, 3,366.18 and 1,391.25

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Solution

The fourth proportional to 2,439.30, 3,366.18 and 1,391.25 is: 1,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.30 : 3,366.18 = 1,391.25 : x
  2. Step 2: Convert to fraction form
    2,439.30/3,366.18 = 1,391.25/x
  3. Step 3: Cross multiply
    2,439.30x = 3,366.18 × 1,391.25
  4. Step 4: Simplify right side
    2,439.30x = 4,683,197.93
  5. Step 5: Solve for x
    x = 4,683,197.93/2,439.30
  6. Step 6: Final answer
    x = 1,919.89

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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.