Home / 5,478.05-7,560.25-3,240.65

Finding the Fourth Proportional to 5,478.05, 7,560.25 and 3,240.65

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Solution

The fourth proportional to 5,478.05, 7,560.25 and 3,240.65 is: 4,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.05 : 7,560.25 = 3,240.65 : x
  2. Step 2: Convert to fraction form
    5,478.05/7,560.25 = 3,240.65/x
  3. Step 3: Cross multiply
    5,478.05x = 7,560.25 × 3,240.65
  4. Step 4: Simplify right side
    5,478.05x = 24,500,109.14
  5. Step 5: Solve for x
    x = 24,500,109.14/5,478.05
  6. Step 6: Final answer
    x = 4,472.41

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.