Home / 5,278.06-7,283.55-2,919.88

Finding the Fourth Proportional to 5,278.06, 7,283.55 and 2,919.88

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Solution

The fourth proportional to 5,278.06, 7,283.55 and 2,919.88 is: 4,029.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.06 : 7,283.55 = 2,919.88 : x
  2. Step 2: Convert to fraction form
    5,278.06/7,283.55 = 2,919.88/x
  3. Step 3: Cross multiply
    5,278.06x = 7,283.55 × 2,919.88
  4. Step 4: Simplify right side
    5,278.06x = 21,267,091.97
  5. Step 5: Solve for x
    x = 21,267,091.97/5,278.06
  6. Step 6: Final answer
    x = 4,029.34

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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.