Home / 7,102.89-9,801.55-3,916.02

Finding the Fourth Proportional to 7,102.89, 9,801.55 and 3,916.02

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Solution

The fourth proportional to 7,102.89, 9,801.55 and 3,916.02 is: 5,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.89 : 9,801.55 = 3,916.02 : x
  2. Step 2: Convert to fraction form
    7,102.89/9,801.55 = 3,916.02/x
  3. Step 3: Cross multiply
    7,102.89x = 9,801.55 × 3,916.02
  4. Step 4: Simplify right side
    7,102.89x = 38,383,046.25
  5. Step 5: Solve for x
    x = 38,383,046.25/7,102.89
  6. Step 6: Final answer
    x = 5,403.86

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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.