Home / 7,542.62-10,408.91-4,139.76

Finding the Fourth Proportional to 7,542.62, 10,408.91 and 4,139.76

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Solution

The fourth proportional to 7,542.62, 10,408.91 and 4,139.76 is: 5,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,542.62 : 10,408.91 = 4,139.76 : x
  2. Step 2: Convert to fraction form
    7,542.62/10,408.91 = 4,139.76/x
  3. Step 3: Cross multiply
    7,542.62x = 10,408.91 × 4,139.76
  4. Step 4: Simplify right side
    7,542.62x = 43,090,349.05
  5. Step 5: Solve for x
    x = 43,090,349.05/7,542.62
  6. Step 6: Final answer
    x = 5,712.92

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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.