Home / 3,436.90-5,156.38-1,357.20

Finding the Fourth Proportional to 3,436.90, 5,156.38 and 1,357.20

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Solution

The fourth proportional to 3,436.90, 5,156.38 and 1,357.20 is: 2,036.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.90 : 5,156.38 = 1,357.20 : x
  2. Step 2: Convert to fraction form
    3,436.90/5,156.38 = 1,357.20/x
  3. Step 3: Cross multiply
    3,436.90x = 5,156.38 × 1,357.20
  4. Step 4: Simplify right side
    3,436.90x = 6,998,238.94
  5. Step 5: Solve for x
    x = 6,998,238.94/3,436.90
  6. Step 6: Final answer
    x = 2,036.21

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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.