Home / 5,401.78-7,454.46-2,917.78

Finding the Fourth Proportional to 5,401.78, 7,454.46 and 2,917.78

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Solution

The fourth proportional to 5,401.78, 7,454.46 and 2,917.78 is: 4,026.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.78 : 7,454.46 = 2,917.78 : x
  2. Step 2: Convert to fraction form
    5,401.78/7,454.46 = 2,917.78/x
  3. Step 3: Cross multiply
    5,401.78x = 7,454.46 × 2,917.78
  4. Step 4: Simplify right side
    5,401.78x = 21,750,474.30
  5. Step 5: Solve for x
    x = 21,750,474.30/5,401.78
  6. Step 6: Final answer
    x = 4,026.54

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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.