Home / 7,158.78-10,739.19-2,718.11

Finding the Fourth Proportional to 7,158.78, 10,739.19 and 2,718.11

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Solution

The fourth proportional to 7,158.78, 10,739.19 and 2,718.11 is: 4,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.78 : 10,739.19 = 2,718.11 : x
  2. Step 2: Convert to fraction form
    7,158.78/10,739.19 = 2,718.11/x
  3. Step 3: Cross multiply
    7,158.78x = 10,739.19 × 2,718.11
  4. Step 4: Simplify right side
    7,158.78x = 29,190,246.03
  5. Step 5: Solve for x
    x = 29,190,246.03/7,158.78
  6. Step 6: Final answer
    x = 4,077.54

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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.