Home / 5,072.78-6,999.77-3,306.78

Finding the Fourth Proportional to 5,072.78, 6,999.77 and 3,306.78

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Solution

The fourth proportional to 5,072.78, 6,999.77 and 3,306.78 is: 4,562.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.78 : 6,999.77 = 3,306.78 : x
  2. Step 2: Convert to fraction form
    5,072.78/6,999.77 = 3,306.78/x
  3. Step 3: Cross multiply
    5,072.78x = 6,999.77 × 3,306.78
  4. Step 4: Simplify right side
    5,072.78x = 23,146,707.71
  5. Step 5: Solve for x
    x = 23,146,707.71/5,072.78
  6. Step 6: Final answer
    x = 4,562.92

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1.5x scale

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.