Home / 9,120.96-12,595.32-8,629.92

Finding the Fourth Proportional to 9,120.96, 12,595.32 and 8,629.92

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Solution

The fourth proportional to 9,120.96, 12,595.32 and 8,629.92 is: 11,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.96 : 12,595.32 = 8,629.92 : x
  2. Step 2: Convert to fraction form
    9,120.96/12,595.32 = 8,629.92/x
  3. Step 3: Cross multiply
    9,120.96x = 12,595.32 × 8,629.92
  4. Step 4: Simplify right side
    9,120.96x = 108,696,603.97
  5. Step 5: Solve for x
    x = 108,696,603.97/9,120.96
  6. Step 6: Final answer
    x = 11,917.23

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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.