Home / 7,742.95-10,679.31-5,221.06

Finding the Fourth Proportional to 7,742.95, 10,679.31 and 5,221.06

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Solution

The fourth proportional to 7,742.95, 10,679.31 and 5,221.06 is: 7,201.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.95 : 10,679.31 = 5,221.06 : x
  2. Step 2: Convert to fraction form
    7,742.95/10,679.31 = 5,221.06/x
  3. Step 3: Cross multiply
    7,742.95x = 10,679.31 × 5,221.06
  4. Step 4: Simplify right side
    7,742.95x = 55,757,291.57
  5. Step 5: Solve for x
    x = 55,757,291.57/7,742.95
  6. Step 6: Final answer
    x = 7,201.04

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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.