Home / 2,781.10-4,164.90-1,479.70

Finding the Fourth Proportional to 2,781.10, 4,164.90 and 1,479.70

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Solution

The fourth proportional to 2,781.10, 4,164.90 and 1,479.70 is: 2,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.10 : 4,164.90 = 1,479.70 : x
  2. Step 2: Convert to fraction form
    2,781.10/4,164.90 = 1,479.70/x
  3. Step 3: Cross multiply
    2,781.10x = 4,164.90 × 1,479.70
  4. Step 4: Simplify right side
    2,781.10x = 6,162,802.53
  5. Step 5: Solve for x
    x = 6,162,802.53/2,781.10
  6. Step 6: Final answer
    x = 2,215.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.