Home / 7,742.25-10,679.45-6,174.09

Finding the Fourth Proportional to 7,742.25, 10,679.45 and 6,174.09

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Solution

The fourth proportional to 7,742.25, 10,679.45 and 6,174.09 is: 8,516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.25 : 10,679.45 = 6,174.09 : x
  2. Step 2: Convert to fraction form
    7,742.25/10,679.45 = 6,174.09/x
  3. Step 3: Cross multiply
    7,742.25x = 10,679.45 × 6,174.09
  4. Step 4: Simplify right side
    7,742.25x = 65,935,854.58
  5. Step 5: Solve for x
    x = 65,935,854.58/7,742.25
  6. Step 6: Final answer
    x = 8,516.37

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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.