Home / 2,156.03-3,232.40-1,115.37

Finding the Fourth Proportional to 2,156.03, 3,232.40 and 1,115.37

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Solution

The fourth proportional to 2,156.03, 3,232.40 and 1,115.37 is: 1,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.03 : 3,232.40 = 1,115.37 : x
  2. Step 2: Convert to fraction form
    2,156.03/3,232.40 = 1,115.37/x
  3. Step 3: Cross multiply
    2,156.03x = 3,232.40 × 1,115.37
  4. Step 4: Simplify right side
    2,156.03x = 3,605,305.83
  5. Step 5: Solve for x
    x = 3,605,305.83/2,156.03
  6. Step 6: Final answer
    x = 1,672.20

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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.