Home / 9,355.36-12,911.08-5,163.68

Finding the Fourth Proportional to 9,355.36, 12,911.08 and 5,163.68

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Solution

The fourth proportional to 9,355.36, 12,911.08 and 5,163.68 is: 7,126.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.36 : 12,911.08 = 5,163.68 : x
  2. Step 2: Convert to fraction form
    9,355.36/12,911.08 = 5,163.68/x
  3. Step 3: Cross multiply
    9,355.36x = 12,911.08 × 5,163.68
  4. Step 4: Simplify right side
    9,355.36x = 66,668,685.57
  5. Step 5: Solve for x
    x = 66,668,685.57/9,355.36
  6. Step 6: Final answer
    x = 7,126.26

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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.