Home / 7,427.28-10,249.60-4,115.28

Finding the Fourth Proportional to 7,427.28, 10,249.60 and 4,115.28

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Solution

The fourth proportional to 7,427.28, 10,249.60 and 4,115.28 is: 5,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.28 : 10,249.60 = 4,115.28 : x
  2. Step 2: Convert to fraction form
    7,427.28/10,249.60 = 4,115.28/x
  3. Step 3: Cross multiply
    7,427.28x = 10,249.60 × 4,115.28
  4. Step 4: Simplify right side
    7,427.28x = 42,179,973.89
  5. Step 5: Solve for x
    x = 42,179,973.89/7,427.28
  6. Step 6: Final answer
    x = 5,679.06

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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.