Home / 4,020.68-5,574.23-3,878.12

Finding the Fourth Proportional to 4,020.68, 5,574.23 and 3,878.12

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Solution

The fourth proportional to 4,020.68, 5,574.23 and 3,878.12 is: 5,376.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020.68 : 5,574.23 = 3,878.12 : x
  2. Step 2: Convert to fraction form
    4,020.68/5,574.23 = 3,878.12/x
  3. Step 3: Cross multiply
    4,020.68x = 5,574.23 × 3,878.12
  4. Step 4: Simplify right side
    4,020.68x = 21,617,532.85
  5. Step 5: Solve for x
    x = 21,617,532.85/4,020.68
  6. Step 6: Final answer
    x = 5,376.59

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.