Home / 2,439.13-3,366.06-1,391.20

Finding the Fourth Proportional to 2,439.13, 3,366.06 and 1,391.20

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Solution

The fourth proportional to 2,439.13, 3,366.06 and 1,391.20 is: 1,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.13 : 3,366.06 = 1,391.20 : x
  2. Step 2: Convert to fraction form
    2,439.13/3,366.06 = 1,391.20/x
  3. Step 3: Cross multiply
    2,439.13x = 3,366.06 × 1,391.20
  4. Step 4: Simplify right side
    2,439.13x = 4,682,862.67
  5. Step 5: Solve for x
    x = 4,682,862.67/2,439.13
  6. Step 6: Final answer
    x = 1,919.89

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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.