Home / 5,121.89-7,678.25-2,001.17

Finding the Fourth Proportional to 5,121.89, 7,678.25 and 2,001.17

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Solution

The fourth proportional to 5,121.89, 7,678.25 and 2,001.17 is: 2,999.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.89 : 7,678.25 = 2,001.17 : x
  2. Step 2: Convert to fraction form
    5,121.89/7,678.25 = 2,001.17/x
  3. Step 3: Cross multiply
    5,121.89x = 7,678.25 × 2,001.17
  4. Step 4: Simplify right side
    5,121.89x = 15,365,435.16
  5. Step 5: Solve for x
    x = 15,365,435.16/5,121.89
  6. Step 6: Final answer
    x = 2,999.96

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1.5x scale

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.