Home / 7,719.66-11,572.60-2,788.20

Finding the Fourth Proportional to 7,719.66, 11,572.60 and 2,788.20

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Solution

The fourth proportional to 7,719.66, 11,572.60 and 2,788.20 is: 4,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.66 : 11,572.60 = 2,788.20 : x
  2. Step 2: Convert to fraction form
    7,719.66/11,572.60 = 2,788.20/x
  3. Step 3: Cross multiply
    7,719.66x = 11,572.60 × 2,788.20
  4. Step 4: Simplify right side
    7,719.66x = 32,266,723.32
  5. Step 5: Solve for x
    x = 32,266,723.32/7,719.66
  6. Step 6: Final answer
    x = 4,179.81

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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.