Home / 3,134.90-4,321.76-1,955.18

Finding the Fourth Proportional to 3,134.90, 4,321.76 and 1,955.18

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Solution

The fourth proportional to 3,134.90, 4,321.76 and 1,955.18 is: 2,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,134.90 : 4,321.76 = 1,955.18 : x
  2. Step 2: Convert to fraction form
    3,134.90/4,321.76 = 1,955.18/x
  3. Step 3: Cross multiply
    3,134.90x = 4,321.76 × 1,955.18
  4. Step 4: Simplify right side
    3,134.90x = 8,449,818.72
  5. Step 5: Solve for x
    x = 8,449,818.72/3,134.90
  6. Step 6: Final answer
    x = 2,695.40

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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.