Home / 2,439.90-3,367.03-1,320.81

Finding the Fourth Proportional to 2,439.90, 3,367.03 and 1,320.81

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Solution

The fourth proportional to 2,439.90, 3,367.03 and 1,320.81 is: 1,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.90 : 3,367.03 = 1,320.81 : x
  2. Step 2: Convert to fraction form
    2,439.90/3,367.03 = 1,320.81/x
  3. Step 3: Cross multiply
    2,439.90x = 3,367.03 × 1,320.81
  4. Step 4: Simplify right side
    2,439.90x = 4,447,195.24
  5. Step 5: Solve for x
    x = 4,447,195.24/2,439.90
  6. Step 6: Final answer
    x = 1,822.70

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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.