Home / 1,563.75-2,158.11-865.26

Finding the Fourth Proportional to 1,563.75, 2,158.11 and 865.26

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Solution

The fourth proportional to 1,563.75, 2,158.11 and 865.26 is: 1,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.75 : 2,158.11 = 865.26 : x
  2. Step 2: Convert to fraction form
    1,563.75/2,158.11 = 865.26/x
  3. Step 3: Cross multiply
    1,563.75x = 2,158.11 × 865.26
  4. Step 4: Simplify right side
    1,563.75x = 1,867,326.26
  5. Step 5: Solve for x
    x = 1,867,326.26/1,563.75
  6. Step 6: Final answer
    x = 1,194.13

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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.