Home / 6,867.40-10,309.20-3,908.20

Finding the Fourth Proportional to 6,867.40, 10,309.20 and 3,908.20

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Solution

The fourth proportional to 6,867.40, 10,309.20 and 3,908.20 is: 5,866.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,867.40 : 10,309.20 = 3,908.20 : x
  2. Step 2: Convert to fraction form
    6,867.40/10,309.20 = 3,908.20/x
  3. Step 3: Cross multiply
    6,867.40x = 10,309.20 × 3,908.20
  4. Step 4: Simplify right side
    6,867.40x = 40,290,415.44
  5. Step 5: Solve for x
    x = 40,290,415.44/6,867.40
  6. Step 6: Final answer
    x = 5,866.91

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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.