Home / 3,129.40-4,318.66-1,713.16

Finding the Fourth Proportional to 3,129.40, 4,318.66 and 1,713.16

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Solution

The fourth proportional to 3,129.40, 4,318.66 and 1,713.16 is: 2,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.40 : 4,318.66 = 1,713.16 : x
  2. Step 2: Convert to fraction form
    3,129.40/4,318.66 = 1,713.16/x
  3. Step 3: Cross multiply
    3,129.40x = 4,318.66 × 1,713.16
  4. Step 4: Simplify right side
    3,129.40x = 7,398,555.57
  5. Step 5: Solve for x
    x = 7,398,555.57/3,129.40
  6. Step 6: Final answer
    x = 2,364.21

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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.