Home / 2,439.85-3,366.99-1,320.79

Finding the Fourth Proportional to 2,439.85, 3,366.99 and 1,320.79

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Solution

The fourth proportional to 2,439.85, 3,366.99 and 1,320.79 is: 1,822.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.85 : 3,366.99 = 1,320.79 : x
  2. Step 2: Convert to fraction form
    2,439.85/3,366.99 = 1,320.79/x
  3. Step 3: Cross multiply
    2,439.85x = 3,366.99 × 1,320.79
  4. Step 4: Simplify right side
    2,439.85x = 4,447,078.30
  5. Step 5: Solve for x
    x = 4,447,078.30/2,439.85
  6. Step 6: Final answer
    x = 1,822.69

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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.