Home / 5,176.89-7,144.65-3,187.40

Finding the Fourth Proportional to 5,176.89, 7,144.65 and 3,187.40

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Solution

The fourth proportional to 5,176.89, 7,144.65 and 3,187.40 is: 4,398.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.89 : 7,144.65 = 3,187.40 : x
  2. Step 2: Convert to fraction form
    5,176.89/7,144.65 = 3,187.40/x
  3. Step 3: Cross multiply
    5,176.89x = 7,144.65 × 3,187.40
  4. Step 4: Simplify right side
    5,176.89x = 22,772,821.69
  5. Step 5: Solve for x
    x = 22,772,821.69/5,176.89
  6. Step 6: Final answer
    x = 4,398.94

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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.