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Finding the Fourth Proportional to 8,119.80, 11,213.10 and 5,333.40

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Solution

The fourth proportional to 8,119.80, 11,213.10 and 5,333.40 is: 7,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.80 : 11,213.10 = 5,333.40 : x
  2. Step 2: Convert to fraction form
    8,119.80/11,213.10 = 5,333.40/x
  3. Step 3: Cross multiply
    8,119.80x = 11,213.10 × 5,333.40
  4. Step 4: Simplify right side
    8,119.80x = 59,803,947.54
  5. Step 5: Solve for x
    x = 59,803,947.54/8,119.80
  6. Step 6: Final answer
    x = 7,365.20

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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.