Home / 6,378.69-8,800.41-3,987.03

Finding the Fourth Proportional to 6,378.69, 8,800.41 and 3,987.03

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Solution

The fourth proportional to 6,378.69, 8,800.41 and 3,987.03 is: 5,500.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.69 : 8,800.41 = 3,987.03 : x
  2. Step 2: Convert to fraction form
    6,378.69/8,800.41 = 3,987.03/x
  3. Step 3: Cross multiply
    6,378.69x = 8,800.41 × 3,987.03
  4. Step 4: Simplify right side
    6,378.69x = 35,087,498.68
  5. Step 5: Solve for x
    x = 35,087,498.68/6,378.69
  6. Step 6: Final answer
    x = 5,500.74

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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.