Home / 3,129.59-4,318.92-1,732.34

Finding the Fourth Proportional to 3,129.59, 4,318.92 and 1,732.34

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Solution

The fourth proportional to 3,129.59, 4,318.92 and 1,732.34 is: 2,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.59 : 4,318.92 = 1,732.34 : x
  2. Step 2: Convert to fraction form
    3,129.59/4,318.92 = 1,732.34/x
  3. Step 3: Cross multiply
    3,129.59x = 4,318.92 × 1,732.34
  4. Step 4: Simplify right side
    3,129.59x = 7,481,816.28
  5. Step 5: Solve for x
    x = 7,481,816.28/3,129.59
  6. Step 6: Final answer
    x = 2,390.67

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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.