Home / 7,278.48-10,911.24-3,380.76

Finding the Fourth Proportional to 7,278.48, 10,911.24 and 3,380.76

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Solution

The fourth proportional to 7,278.48, 10,911.24 and 3,380.76 is: 5,068.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.48 : 10,911.24 = 3,380.76 : x
  2. Step 2: Convert to fraction form
    7,278.48/10,911.24 = 3,380.76/x
  3. Step 3: Cross multiply
    7,278.48x = 10,911.24 × 3,380.76
  4. Step 4: Simplify right side
    7,278.48x = 36,888,283.74
  5. Step 5: Solve for x
    x = 36,888,283.74/7,278.48
  6. Step 6: Final answer
    x = 5,068.13

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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.