Home / 2,612.78-3,605.70-1,433.85

Finding the Fourth Proportional to 2,612.78, 3,605.70 and 1,433.85

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Solution

The fourth proportional to 2,612.78, 3,605.70 and 1,433.85 is: 1,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.78 : 3,605.70 = 1,433.85 : x
  2. Step 2: Convert to fraction form
    2,612.78/3,605.70 = 1,433.85/x
  3. Step 3: Cross multiply
    2,612.78x = 3,605.70 × 1,433.85
  4. Step 4: Simplify right side
    2,612.78x = 5,170,032.95
  5. Step 5: Solve for x
    x = 5,170,032.95/2,612.78
  6. Step 6: Final answer
    x = 1,978.75

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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.