Home / 2,145.06-3,218.40-758.52

Finding the Fourth Proportional to 2,145.06, 3,218.40 and 758.52

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Solution

The fourth proportional to 2,145.06, 3,218.40 and 758.52 is: 1,138.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.06 : 3,218.40 = 758.52 : x
  2. Step 2: Convert to fraction form
    2,145.06/3,218.40 = 758.52/x
  3. Step 3: Cross multiply
    2,145.06x = 3,218.40 × 758.52
  4. Step 4: Simplify right side
    2,145.06x = 2,441,220.77
  5. Step 5: Solve for x
    x = 2,441,220.77/2,145.06
  6. Step 6: Final answer
    x = 1,138.07

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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.