Home / 5,278.11-7,283.49-2,920.11

Finding the Fourth Proportional to 5,278.11, 7,283.49 and 2,920.11

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Solution

The fourth proportional to 5,278.11, 7,283.49 and 2,920.11 is: 4,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.11 : 7,283.49 = 2,920.11 : x
  2. Step 2: Convert to fraction form
    5,278.11/7,283.49 = 2,920.11/x
  3. Step 3: Cross multiply
    5,278.11x = 7,283.49 × 2,920.11
  4. Step 4: Simplify right side
    5,278.11x = 21,268,591.98
  5. Step 5: Solve for x
    x = 21,268,591.98/5,278.11
  6. Step 6: Final answer
    x = 4,029.58

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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.