Home / 3,390.85-5,086.95-1,201.13

Finding the Fourth Proportional to 3,390.85, 5,086.95 and 1,201.13

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Solution

The fourth proportional to 3,390.85, 5,086.95 and 1,201.13 is: 1,801.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.85 : 5,086.95 = 1,201.13 : x
  2. Step 2: Convert to fraction form
    3,390.85/5,086.95 = 1,201.13/x
  3. Step 3: Cross multiply
    3,390.85x = 5,086.95 × 1,201.13
  4. Step 4: Simplify right side
    3,390.85x = 6,110,088.25
  5. Step 5: Solve for x
    x = 6,110,088.25/3,390.85
  6. Step 6: Final answer
    x = 1,801.93

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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.