Home / 3,621.61-5,430.17-1,540.42

Finding the Fourth Proportional to 3,621.61, 5,430.17 and 1,540.42

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Solution

The fourth proportional to 3,621.61, 5,430.17 and 1,540.42 is: 2,309.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.61 : 5,430.17 = 1,540.42 : x
  2. Step 2: Convert to fraction form
    3,621.61/5,430.17 = 1,540.42/x
  3. Step 3: Cross multiply
    3,621.61x = 5,430.17 × 1,540.42
  4. Step 4: Simplify right side
    3,621.61x = 8,364,732.75
  5. Step 5: Solve for x
    x = 8,364,732.75/3,621.61
  6. Step 6: Final answer
    x = 2,309.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.