Home / 3,129.56-4,318.76-1,713.26

Finding the Fourth Proportional to 3,129.56, 4,318.76 and 1,713.26

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Solution

The fourth proportional to 3,129.56, 4,318.76 and 1,713.26 is: 2,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.56 : 4,318.76 = 1,713.26 : x
  2. Step 2: Convert to fraction form
    3,129.56/4,318.76 = 1,713.26/x
  3. Step 3: Cross multiply
    3,129.56x = 4,318.76 × 1,713.26
  4. Step 4: Simplify right side
    3,129.56x = 7,399,158.76
  5. Step 5: Solve for x
    x = 7,399,158.76/3,129.56
  6. Step 6: Final answer
    x = 2,364.28

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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.