Home / 7,278.10-10,922.55-2,898.70

Finding the Fourth Proportional to 7,278.10, 10,922.55 and 2,898.70

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Solution

The fourth proportional to 7,278.10, 10,922.55 and 2,898.70 is: 4,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.10 : 10,922.55 = 2,898.70 : x
  2. Step 2: Convert to fraction form
    7,278.10/10,922.55 = 2,898.70/x
  3. Step 3: Cross multiply
    7,278.10x = 10,922.55 × 2,898.70
  4. Step 4: Simplify right side
    7,278.10x = 31,661,195.69
  5. Step 5: Solve for x
    x = 31,661,195.69/7,278.10
  6. Step 6: Final answer
    x = 4,350.20

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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.