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Finding the Fourth Proportional to 8,619.80, 11,894.87 and 4,843.11

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Solution

The fourth proportional to 8,619.80, 11,894.87 and 4,843.11 is: 6,683.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.80 : 11,894.87 = 4,843.11 : x
  2. Step 2: Convert to fraction form
    8,619.80/11,894.87 = 4,843.11/x
  3. Step 3: Cross multiply
    8,619.80x = 11,894.87 × 4,843.11
  4. Step 4: Simplify right side
    8,619.80x = 57,608,139.63
  5. Step 5: Solve for x
    x = 57,608,139.63/8,619.80
  6. Step 6: Final answer
    x = 6,683.24

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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.