Home / 2,319.11-3,478.67-1,087.38

Finding the Fourth Proportional to 2,319.11, 3,478.67 and 1,087.38

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Solution

The fourth proportional to 2,319.11, 3,478.67 and 1,087.38 is: 1,631.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.11 : 3,478.67 = 1,087.38 : x
  2. Step 2: Convert to fraction form
    2,319.11/3,478.67 = 1,087.38/x
  3. Step 3: Cross multiply
    2,319.11x = 3,478.67 × 1,087.38
  4. Step 4: Simplify right side
    2,319.11x = 3,782,630.75
  5. Step 5: Solve for x
    x = 3,782,630.75/2,319.11
  6. Step 6: Final answer
    x = 1,631.07

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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.