Home / 6,855.60-10,275.30-5,122.20

Finding the Fourth Proportional to 6,855.60, 10,275.30 and 5,122.20

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Solution

The fourth proportional to 6,855.60, 10,275.30 and 5,122.20 is: 7,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.60 : 10,275.30 = 5,122.20 : x
  2. Step 2: Convert to fraction form
    6,855.60/10,275.30 = 5,122.20/x
  3. Step 3: Cross multiply
    6,855.60x = 10,275.30 × 5,122.20
  4. Step 4: Simplify right side
    6,855.60x = 52,632,141.66
  5. Step 5: Solve for x
    x = 52,632,141.66/6,855.60
  6. Step 6: Final answer
    x = 7,677.25

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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.