Home / 2,439.81-3,366.92-1,320.75

Finding the Fourth Proportional to 2,439.81, 3,366.92 and 1,320.75

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Solution

The fourth proportional to 2,439.81, 3,366.92 and 1,320.75 is: 1,822.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.81 : 3,366.92 = 1,320.75 : x
  2. Step 2: Convert to fraction form
    2,439.81/3,366.92 = 1,320.75/x
  3. Step 3: Cross multiply
    2,439.81x = 3,366.92 × 1,320.75
  4. Step 4: Simplify right side
    2,439.81x = 4,446,862.89
  5. Step 5: Solve for x
    x = 4,446,862.89/2,439.81
  6. Step 6: Final answer
    x = 1,822.63

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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.