Home / 2,380.20-3,284.57-1,317.89

Finding the Fourth Proportional to 2,380.20, 3,284.57 and 1,317.89

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Solution

The fourth proportional to 2,380.20, 3,284.57 and 1,317.89 is: 1,818.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.20 : 3,284.57 = 1,317.89 : x
  2. Step 2: Convert to fraction form
    2,380.20/3,284.57 = 1,317.89/x
  3. Step 3: Cross multiply
    2,380.20x = 3,284.57 × 1,317.89
  4. Step 4: Simplify right side
    2,380.20x = 4,328,691.26
  5. Step 5: Solve for x
    x = 4,328,691.26/2,380.20
  6. Step 6: Final answer
    x = 1,818.63

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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.