Home / 8,121.69-11,208.15-4,976.07

Finding the Fourth Proportional to 8,121.69, 11,208.15 and 4,976.07

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Solution

The fourth proportional to 8,121.69, 11,208.15 and 4,976.07 is: 6,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.69 : 11,208.15 = 4,976.07 : x
  2. Step 2: Convert to fraction form
    8,121.69/11,208.15 = 4,976.07/x
  3. Step 3: Cross multiply
    8,121.69x = 11,208.15 × 4,976.07
  4. Step 4: Simplify right side
    8,121.69x = 55,772,538.97
  5. Step 5: Solve for x
    x = 55,772,538.97/8,121.69
  6. Step 6: Final answer
    x = 6,867.11

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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.