Home / 2,479.79-3,422.10-1,360.70

Finding the Fourth Proportional to 2,479.79, 3,422.10 and 1,360.70

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Solution

The fourth proportional to 2,479.79, 3,422.10 and 1,360.70 is: 1,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.79 : 3,422.10 = 1,360.70 : x
  2. Step 2: Convert to fraction form
    2,479.79/3,422.10 = 1,360.70/x
  3. Step 3: Cross multiply
    2,479.79x = 3,422.10 × 1,360.70
  4. Step 4: Simplify right side
    2,479.79x = 4,656,451.47
  5. Step 5: Solve for x
    x = 4,656,451.47/2,479.79
  6. Step 6: Final answer
    x = 1,877.76

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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.