Home / 9,355.75-12,911.12-5,163.91

Finding the Fourth Proportional to 9,355.75, 12,911.12 and 5,163.91

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Solution

The fourth proportional to 9,355.75, 12,911.12 and 5,163.91 is: 7,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.75 : 12,911.12 = 5,163.91 : x
  2. Step 2: Convert to fraction form
    9,355.75/12,911.12 = 5,163.91/x
  3. Step 3: Cross multiply
    9,355.75x = 12,911.12 × 5,163.91
  4. Step 4: Simplify right side
    9,355.75x = 66,671,861.68
  5. Step 5: Solve for x
    x = 66,671,861.68/9,355.75
  6. Step 6: Final answer
    x = 7,126.30

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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.