Home / 3,609.15-5,387.61-3,171.75

Finding the Fourth Proportional to 3,609.15, 5,387.61 and 3,171.75

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Solution

The fourth proportional to 3,609.15, 5,387.61 and 3,171.75 is: 4,734.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.15 : 5,387.61 = 3,171.75 : x
  2. Step 2: Convert to fraction form
    3,609.15/5,387.61 = 3,171.75/x
  3. Step 3: Cross multiply
    3,609.15x = 5,387.61 × 3,171.75
  4. Step 4: Simplify right side
    3,609.15x = 17,088,152.02
  5. Step 5: Solve for x
    x = 17,088,152.02/3,609.15
  6. Step 6: Final answer
    x = 4,734.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.