Home / 2,520.38-3,479.04-2,164.86

Finding the Fourth Proportional to 2,520.38, 3,479.04 and 2,164.86

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Solution

The fourth proportional to 2,520.38, 3,479.04 and 2,164.86 is: 2,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.38 : 3,479.04 = 2,164.86 : x
  2. Step 2: Convert to fraction form
    2,520.38/3,479.04 = 2,164.86/x
  3. Step 3: Cross multiply
    2,520.38x = 3,479.04 × 2,164.86
  4. Step 4: Simplify right side
    2,520.38x = 7,531,634.53
  5. Step 5: Solve for x
    x = 7,531,634.53/2,520.38
  6. Step 6: Final answer
    x = 2,988.29

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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.