Home / 2,197.32-3,031.38-1,440.90

Finding the Fourth Proportional to 2,197.32, 3,031.38 and 1,440.90

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Solution

The fourth proportional to 2,197.32, 3,031.38 and 1,440.90 is: 1,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.32 : 3,031.38 = 1,440.90 : x
  2. Step 2: Convert to fraction form
    2,197.32/3,031.38 = 1,440.90/x
  3. Step 3: Cross multiply
    2,197.32x = 3,031.38 × 1,440.90
  4. Step 4: Simplify right side
    2,197.32x = 4,367,915.44
  5. Step 5: Solve for x
    x = 4,367,915.44/2,197.32
  6. Step 6: Final answer
    x = 1,987.84

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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.