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Finding the Fourth Proportional to 2,391.68, 3,587.52 and 636.68

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Solution

The fourth proportional to 2,391.68, 3,587.52 and 636.68 is: 955.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.68 : 3,587.52 = 636.68 : x
  2. Step 2: Convert to fraction form
    2,391.68/3,587.52 = 636.68/x
  3. Step 3: Cross multiply
    2,391.68x = 3,587.52 × 636.68
  4. Step 4: Simplify right side
    2,391.68x = 2,284,112.50
  5. Step 5: Solve for x
    x = 2,284,112.50/2,391.68
  6. Step 6: Final answer
    x = 955.02

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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.