Home / 3,436.40-5,156.72-1,356.05

Finding the Fourth Proportional to 3,436.40, 5,156.72 and 1,356.05

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Solution

The fourth proportional to 3,436.40, 5,156.72 and 1,356.05 is: 2,034.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.40 : 5,156.72 = 1,356.05 : x
  2. Step 2: Convert to fraction form
    3,436.40/5,156.72 = 1,356.05/x
  3. Step 3: Cross multiply
    3,436.40x = 5,156.72 × 1,356.05
  4. Step 4: Simplify right side
    3,436.40x = 6,992,737.59
  5. Step 5: Solve for x
    x = 6,992,737.59/3,436.40
  6. Step 6: Final answer
    x = 2,034.91

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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.