Home / 2,320.31-3,202.03-1,272.40

Finding the Fourth Proportional to 2,320.31, 3,202.03 and 1,272.40

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Solution

The fourth proportional to 2,320.31, 3,202.03 and 1,272.40 is: 1,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.31 : 3,202.03 = 1,272.40 : x
  2. Step 2: Convert to fraction form
    2,320.31/3,202.03 = 1,272.40/x
  3. Step 3: Cross multiply
    2,320.31x = 3,202.03 × 1,272.40
  4. Step 4: Simplify right side
    2,320.31x = 4,074,256.56
  5. Step 5: Solve for x
    x = 4,074,256.56/2,320.31
  6. Step 6: Final answer
    x = 1,755.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.