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Finding the Fourth Proportional to 8,130.98, 11,220.97 and 4,943.18

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Solution

The fourth proportional to 8,130.98, 11,220.97 and 4,943.18 is: 6,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.98 : 11,220.97 = 4,943.18 : x
  2. Step 2: Convert to fraction form
    8,130.98/11,220.97 = 4,943.18/x
  3. Step 3: Cross multiply
    8,130.98x = 11,220.97 × 4,943.18
  4. Step 4: Simplify right side
    8,130.98x = 55,467,274.48
  5. Step 5: Solve for x
    x = 55,467,274.48/8,130.98
  6. Step 6: Final answer
    x = 6,821.72

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Double scale
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Similar ratio
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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.