Home / 3,278.04-4,913.07-1,520.65

Finding the Fourth Proportional to 3,278.04, 4,913.07 and 1,520.65

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Solution

The fourth proportional to 3,278.04, 4,913.07 and 1,520.65 is: 2,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.04 : 4,913.07 = 1,520.65 : x
  2. Step 2: Convert to fraction form
    3,278.04/4,913.07 = 1,520.65/x
  3. Step 3: Cross multiply
    3,278.04x = 4,913.07 × 1,520.65
  4. Step 4: Simplify right side
    3,278.04x = 7,471,059.90
  5. Step 5: Solve for x
    x = 7,471,059.90/3,278.04
  6. Step 6: Final answer
    x = 2,279.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.