Home / 7,372.80-10,177.92-5,278.08

Finding the Fourth Proportional to 7,372.80, 10,177.92 and 5,278.08

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Solution

The fourth proportional to 7,372.80, 10,177.92 and 5,278.08 is: 7,286.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,372.80 : 10,177.92 = 5,278.08 : x
  2. Step 2: Convert to fraction form
    7,372.80/10,177.92 = 5,278.08/x
  3. Step 3: Cross multiply
    7,372.80x = 10,177.92 × 5,278.08
  4. Step 4: Simplify right side
    7,372.80x = 53,719,875.99
  5. Step 5: Solve for x
    x = 53,719,875.99/7,372.80
  6. Step 6: Final answer
    x = 7,286.22

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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.