Home / 5,278.28-7,284.08-2,920.56

Finding the Fourth Proportional to 5,278.28, 7,284.08 and 2,920.56

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Solution

The fourth proportional to 5,278.28, 7,284.08 and 2,920.56 is: 4,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.28 : 7,284.08 = 2,920.56 : x
  2. Step 2: Convert to fraction form
    5,278.28/7,284.08 = 2,920.56/x
  3. Step 3: Cross multiply
    5,278.28x = 7,284.08 × 2,920.56
  4. Step 4: Simplify right side
    5,278.28x = 21,273,592.68
  5. Step 5: Solve for x
    x = 21,273,592.68/5,278.28
  6. Step 6: Final answer
    x = 4,030.40

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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.