Home / 7,278.20-10,917.28-4,812.48

Finding the Fourth Proportional to 7,278.20, 10,917.28 and 4,812.48

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Solution

The fourth proportional to 7,278.20, 10,917.28 and 4,812.48 is: 7,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.20 : 10,917.28 = 4,812.48 : x
  2. Step 2: Convert to fraction form
    7,278.20/10,917.28 = 4,812.48/x
  3. Step 3: Cross multiply
    7,278.20x = 10,917.28 × 4,812.48
  4. Step 4: Simplify right side
    7,278.20x = 52,539,191.65
  5. Step 5: Solve for x
    x = 52,539,191.65/7,278.20
  6. Step 6: Final answer
    x = 7,218.71

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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.