Home / 7,439.38-11,139.08-3,922.07

Finding the Fourth Proportional to 7,439.38, 11,139.08 and 3,922.07

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Solution

The fourth proportional to 7,439.38, 11,139.08 and 3,922.07 is: 5,872.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.38 : 11,139.08 = 3,922.07 : x
  2. Step 2: Convert to fraction form
    7,439.38/11,139.08 = 3,922.07/x
  3. Step 3: Cross multiply
    7,439.38x = 11,139.08 × 3,922.07
  4. Step 4: Simplify right side
    7,439.38x = 43,688,251.50
  5. Step 5: Solve for x
    x = 43,688,251.50/7,439.38
  6. Step 6: Final answer
    x = 5,872.57

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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.