Home / 3,031.13-4,180.19-1,967.78

Finding the Fourth Proportional to 3,031.13, 4,180.19 and 1,967.78

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Solution

The fourth proportional to 3,031.13, 4,180.19 and 1,967.78 is: 2,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.13 : 4,180.19 = 1,967.78 : x
  2. Step 2: Convert to fraction form
    3,031.13/4,180.19 = 1,967.78/x
  3. Step 3: Cross multiply
    3,031.13x = 4,180.19 × 1,967.78
  4. Step 4: Simplify right side
    3,031.13x = 8,225,694.89
  5. Step 5: Solve for x
    x = 8,225,694.89/3,031.13
  6. Step 6: Final answer
    x = 2,713.74

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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.