Home / 9,319.92-12,860.96-5,128.17

Finding the Fourth Proportional to 9,319.92, 12,860.96 and 5,128.17

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Solution

The fourth proportional to 9,319.92, 12,860.96 and 5,128.17 is: 7,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.92 : 12,860.96 = 5,128.17 : x
  2. Step 2: Convert to fraction form
    9,319.92/12,860.96 = 5,128.17/x
  3. Step 3: Cross multiply
    9,319.92x = 12,860.96 × 5,128.17
  4. Step 4: Simplify right side
    9,319.92x = 65,953,163.60
  5. Step 5: Solve for x
    x = 65,953,163.60/9,319.92
  6. Step 6: Final answer
    x = 7,076.58

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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.