Home / 5,143.77-7,715.66-3,408.75

Finding the Fourth Proportional to 5,143.77, 7,715.66 and 3,408.75

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Solution

The fourth proportional to 5,143.77, 7,715.66 and 3,408.75 is: 5,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.77 : 7,715.66 = 3,408.75 : x
  2. Step 2: Convert to fraction form
    5,143.77/7,715.66 = 3,408.75/x
  3. Step 3: Cross multiply
    5,143.77x = 7,715.66 × 3,408.75
  4. Step 4: Simplify right side
    5,143.77x = 26,300,738.98
  5. Step 5: Solve for x
    x = 26,300,738.98/5,143.77
  6. Step 6: Final answer
    x = 5,113.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.