Home / 5,278.19-7,282.78-3,153.15

Finding the Fourth Proportional to 5,278.19, 7,282.78 and 3,153.15

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Solution

The fourth proportional to 5,278.19, 7,282.78 and 3,153.15 is: 4,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.19 : 7,282.78 = 3,153.15 : x
  2. Step 2: Convert to fraction form
    5,278.19/7,282.78 = 3,153.15/x
  3. Step 3: Cross multiply
    5,278.19x = 7,282.78 × 3,153.15
  4. Step 4: Simplify right side
    5,278.19x = 22,963,689.87
  5. Step 5: Solve for x
    x = 22,963,689.87/5,278.19
  6. Step 6: Final answer
    x = 4,350.68

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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.