Home / 2,479.40-3,421.61-1,360.32

Finding the Fourth Proportional to 2,479.40, 3,421.61 and 1,360.32

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Solution

The fourth proportional to 2,479.40, 3,421.61 and 1,360.32 is: 1,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.40 : 3,421.61 = 1,360.32 : x
  2. Step 2: Convert to fraction form
    2,479.40/3,421.61 = 1,360.32/x
  3. Step 3: Cross multiply
    2,479.40x = 3,421.61 × 1,360.32
  4. Step 4: Simplify right side
    2,479.40x = 4,654,472.56
  5. Step 5: Solve for x
    x = 4,654,472.56/2,479.40
  6. Step 6: Final answer
    x = 1,877.26

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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.