Home / 2,439.25-3,366.77-1,391.92

Finding the Fourth Proportional to 2,439.25, 3,366.77 and 1,391.92

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Solution

The fourth proportional to 2,439.25, 3,366.77 and 1,391.92 is: 1,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.25 : 3,366.77 = 1,391.92 : x
  2. Step 2: Convert to fraction form
    2,439.25/3,366.77 = 1,391.92/x
  3. Step 3: Cross multiply
    2,439.25x = 3,366.77 × 1,391.92
  4. Step 4: Simplify right side
    2,439.25x = 4,686,274.50
  5. Step 5: Solve for x
    x = 4,686,274.50/2,439.25
  6. Step 6: Final answer
    x = 1,921.19

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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.