Home / 3,612.11-5,418.95-1,113.31

Finding the Fourth Proportional to 3,612.11, 5,418.95 and 1,113.31

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Solution

The fourth proportional to 3,612.11, 5,418.95 and 1,113.31 is: 1,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.11 : 5,418.95 = 1,113.31 : x
  2. Step 2: Convert to fraction form
    3,612.11/5,418.95 = 1,113.31/x
  3. Step 3: Cross multiply
    3,612.11x = 5,418.95 × 1,113.31
  4. Step 4: Simplify right side
    3,612.11x = 6,032,978.69
  5. Step 5: Solve for x
    x = 6,032,978.69/3,612.11
  6. Step 6: Final answer
    x = 1,670.21

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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.