Home / 2,175.34-3,001.50-1,291.44

Finding the Fourth Proportional to 2,175.34, 3,001.50 and 1,291.44

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Solution

The fourth proportional to 2,175.34, 3,001.50 and 1,291.44 is: 1,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.34 : 3,001.50 = 1,291.44 : x
  2. Step 2: Convert to fraction form
    2,175.34/3,001.50 = 1,291.44/x
  3. Step 3: Cross multiply
    2,175.34x = 3,001.50 × 1,291.44
  4. Step 4: Simplify right side
    2,175.34x = 3,876,242.15
  5. Step 5: Solve for x
    x = 3,876,242.15/2,175.34
  6. Step 6: Final answer
    x = 1,781.90

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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.