Home / 7,542.36-10,408.57-4,139.65

Finding the Fourth Proportional to 7,542.36, 10,408.57 and 4,139.65

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Solution

The fourth proportional to 7,542.36, 10,408.57 and 4,139.65 is: 5,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,542.36 : 10,408.57 = 4,139.65 : x
  2. Step 2: Convert to fraction form
    7,542.36/10,408.57 = 4,139.65/x
  3. Step 3: Cross multiply
    7,542.36x = 10,408.57 × 4,139.65
  4. Step 4: Simplify right side
    7,542.36x = 43,087,839.46
  5. Step 5: Solve for x
    x = 43,087,839.46/7,542.36
  6. Step 6: Final answer
    x = 5,712.78

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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.