Home / 2,163.24-2,987.28-1,375.92

Finding the Fourth Proportional to 2,163.24, 2,987.28 and 1,375.92

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Solution

The fourth proportional to 2,163.24, 2,987.28 and 1,375.92 is: 1,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.24 : 2,987.28 = 1,375.92 : x
  2. Step 2: Convert to fraction form
    2,163.24/2,987.28 = 1,375.92/x
  3. Step 3: Cross multiply
    2,163.24x = 2,987.28 × 1,375.92
  4. Step 4: Simplify right side
    2,163.24x = 4,110,258.30
  5. Step 5: Solve for x
    x = 4,110,258.30/2,163.24
  6. Step 6: Final answer
    x = 1,900.05

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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.