Home / 1,759.38-2,638.50-1,215.06

Finding the Fourth Proportional to 1,759.38, 2,638.50 and 1,215.06

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Solution

The fourth proportional to 1,759.38, 2,638.50 and 1,215.06 is: 1,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.38 : 2,638.50 = 1,215.06 : x
  2. Step 2: Convert to fraction form
    1,759.38/2,638.50 = 1,215.06/x
  3. Step 3: Cross multiply
    1,759.38x = 2,638.50 × 1,215.06
  4. Step 4: Simplify right side
    1,759.38x = 3,205,935.81
  5. Step 5: Solve for x
    x = 3,205,935.81/1,759.38
  6. Step 6: Final answer
    x = 1,822.20

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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.