Home / 4,874.14-6,720.78-3,987.28

Finding the Fourth Proportional to 4,874.14, 6,720.78 and 3,987.28

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Solution

The fourth proportional to 4,874.14, 6,720.78 and 3,987.28 is: 5,497.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,874.14 : 6,720.78 = 3,987.28 : x
  2. Step 2: Convert to fraction form
    4,874.14/6,720.78 = 3,987.28/x
  3. Step 3: Cross multiply
    4,874.14x = 6,720.78 × 3,987.28
  4. Step 4: Simplify right side
    4,874.14x = 26,797,631.68
  5. Step 5: Solve for x
    x = 26,797,631.68/4,874.14
  6. Step 6: Final answer
    x = 5,497.92

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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.