Home / 2,209.92-3,315.64-1,113.38

Finding the Fourth Proportional to 2,209.92, 3,315.64 and 1,113.38

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Solution

The fourth proportional to 2,209.92, 3,315.64 and 1,113.38 is: 1,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.92 : 3,315.64 = 1,113.38 : x
  2. Step 2: Convert to fraction form
    2,209.92/3,315.64 = 1,113.38/x
  3. Step 3: Cross multiply
    2,209.92x = 3,315.64 × 1,113.38
  4. Step 4: Simplify right side
    2,209.92x = 3,691,567.26
  5. Step 5: Solve for x
    x = 3,691,567.26/2,209.92
  6. Step 6: Final answer
    x = 1,670.45

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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.