Home / 1,637.03-2,454.72-815.75

Finding the Fourth Proportional to 1,637.03, 2,454.72 and 815.75

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Solution

The fourth proportional to 1,637.03, 2,454.72 and 815.75 is: 1,223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.03 : 2,454.72 = 815.75 : x
  2. Step 2: Convert to fraction form
    1,637.03/2,454.72 = 815.75/x
  3. Step 3: Cross multiply
    1,637.03x = 2,454.72 × 815.75
  4. Step 4: Simplify right side
    1,637.03x = 2,002,450.11
  5. Step 5: Solve for x
    x = 2,002,450.11/1,637.03
  6. Step 6: Final answer
    x = 1,223.22

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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.