Home / 8,475.79-11,696.96-5,638.61

Finding the Fourth Proportional to 8,475.79, 11,696.96 and 5,638.61

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Solution

The fourth proportional to 8,475.79, 11,696.96 and 5,638.61 is: 7,781.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.79 : 11,696.96 = 5,638.61 : x
  2. Step 2: Convert to fraction form
    8,475.79/11,696.96 = 5,638.61/x
  3. Step 3: Cross multiply
    8,475.79x = 11,696.96 × 5,638.61
  4. Step 4: Simplify right side
    8,475.79x = 65,954,607.25
  5. Step 5: Solve for x
    x = 65,954,607.25/8,475.79
  6. Step 6: Final answer
    x = 7,781.53

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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.