Home / 2,391.55-3,299.90-1,329.20

Finding the Fourth Proportional to 2,391.55, 3,299.90 and 1,329.20

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Solution

The fourth proportional to 2,391.55, 3,299.90 and 1,329.20 is: 1,834.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.55 : 3,299.90 = 1,329.20 : x
  2. Step 2: Convert to fraction form
    2,391.55/3,299.90 = 1,329.20/x
  3. Step 3: Cross multiply
    2,391.55x = 3,299.90 × 1,329.20
  4. Step 4: Simplify right side
    2,391.55x = 4,386,227.08
  5. Step 5: Solve for x
    x = 4,386,227.08/2,391.55
  6. Step 6: Final answer
    x = 1,834.05

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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.