Home / 3,129.45-4,318.76-1,713.11

Finding the Fourth Proportional to 3,129.45, 4,318.76 and 1,713.11

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Solution

The fourth proportional to 3,129.45, 4,318.76 and 1,713.11 is: 2,364.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.45 : 4,318.76 = 1,713.11 : x
  2. Step 2: Convert to fraction form
    3,129.45/4,318.76 = 1,713.11/x
  3. Step 3: Cross multiply
    3,129.45x = 4,318.76 × 1,713.11
  4. Step 4: Simplify right side
    3,129.45x = 7,398,480.78
  5. Step 5: Solve for x
    x = 7,398,480.78/3,129.45
  6. Step 6: Final answer
    x = 2,364.15

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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.