Home / 2,175.78-3,257.28-1,351.55

Finding the Fourth Proportional to 2,175.78, 3,257.28 and 1,351.55

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Solution

The fourth proportional to 2,175.78, 3,257.28 and 1,351.55 is: 2,023.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.78 : 3,257.28 = 1,351.55 : x
  2. Step 2: Convert to fraction form
    2,175.78/3,257.28 = 1,351.55/x
  3. Step 3: Cross multiply
    2,175.78x = 3,257.28 × 1,351.55
  4. Step 4: Simplify right side
    2,175.78x = 4,402,384.93
  5. Step 5: Solve for x
    x = 4,402,384.93/2,175.78
  6. Step 6: Final answer
    x = 2,023.36

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1.5x scale

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.