Home / 1,765.28-2,642.72-1,305.11

Finding the Fourth Proportional to 1,765.28, 2,642.72 and 1,305.11

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Solution

The fourth proportional to 1,765.28, 2,642.72 and 1,305.11 is: 1,953.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.28 : 2,642.72 = 1,305.11 : x
  2. Step 2: Convert to fraction form
    1,765.28/2,642.72 = 1,305.11/x
  3. Step 3: Cross multiply
    1,765.28x = 2,642.72 × 1,305.11
  4. Step 4: Simplify right side
    1,765.28x = 3,449,040.30
  5. Step 5: Solve for x
    x = 3,449,040.30/1,765.28
  6. Step 6: Final answer
    x = 1,953.82

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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.