Home / 2,277.90-3,412.33-1,148.78

Finding the Fourth Proportional to 2,277.90, 3,412.33 and 1,148.78

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Solution

The fourth proportional to 2,277.90, 3,412.33 and 1,148.78 is: 1,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.90 : 3,412.33 = 1,148.78 : x
  2. Step 2: Convert to fraction form
    2,277.90/3,412.33 = 1,148.78/x
  3. Step 3: Cross multiply
    2,277.90x = 3,412.33 × 1,148.78
  4. Step 4: Simplify right side
    2,277.90x = 3,920,022.12
  5. Step 5: Solve for x
    x = 3,920,022.12/2,277.90
  6. Step 6: Final answer
    x = 1,720.90

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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.