Home / 5,278.78-7,285.62-3,040.26

Finding the Fourth Proportional to 5,278.78, 7,285.62 and 3,040.26

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Solution

The fourth proportional to 5,278.78, 7,285.62 and 3,040.26 is: 4,196.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.78 : 7,285.62 = 3,040.26 : x
  2. Step 2: Convert to fraction form
    5,278.78/7,285.62 = 3,040.26/x
  3. Step 3: Cross multiply
    5,278.78x = 7,285.62 × 3,040.26
  4. Step 4: Simplify right side
    5,278.78x = 22,150,179.06
  5. Step 5: Solve for x
    x = 22,150,179.06/5,278.78
  6. Step 6: Final answer
    x = 4,196.08

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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.