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Finding the Fourth Proportional to 8,561.80, 11,818.34 and 5,334.28

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Solution

The fourth proportional to 8,561.80, 11,818.34 and 5,334.28 is: 7,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.80 : 11,818.34 = 5,334.28 : x
  2. Step 2: Convert to fraction form
    8,561.80/11,818.34 = 5,334.28/x
  3. Step 3: Cross multiply
    8,561.80x = 11,818.34 × 5,334.28
  4. Step 4: Simplify right side
    8,561.80x = 63,042,334.70
  5. Step 5: Solve for x
    x = 63,042,334.70/8,561.80
  6. Step 6: Final answer
    x = 7,363.21

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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.