Home / 7,408.92-10,218.78-5,427.48

Finding the Fourth Proportional to 7,408.92, 10,218.78 and 5,427.48

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Solution

The fourth proportional to 7,408.92, 10,218.78 and 5,427.48 is: 7,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.92 : 10,218.78 = 5,427.48 : x
  2. Step 2: Convert to fraction form
    7,408.92/10,218.78 = 5,427.48/x
  3. Step 3: Cross multiply
    7,408.92x = 10,218.78 × 5,427.48
  4. Step 4: Simplify right side
    7,408.92x = 55,462,224.07
  5. Step 5: Solve for x
    x = 55,462,224.07/7,408.92
  6. Step 6: Final answer
    x = 7,485.87

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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.