Home / 7,163.91-9,885.85-3,977.33

Finding the Fourth Proportional to 7,163.91, 9,885.85 and 3,977.33

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Solution

The fourth proportional to 7,163.91, 9,885.85 and 3,977.33 is: 5,488.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.91 : 9,885.85 = 3,977.33 : x
  2. Step 2: Convert to fraction form
    7,163.91/9,885.85 = 3,977.33/x
  3. Step 3: Cross multiply
    7,163.91x = 9,885.85 × 3,977.33
  4. Step 4: Simplify right side
    7,163.91x = 39,319,228.41
  5. Step 5: Solve for x
    x = 39,319,228.41/7,163.91
  6. Step 6: Final answer
    x = 5,488.52

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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.