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Finding the Fourth Proportional to 8,852.80, 13,261.76 and 4,945.28

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Solution

The fourth proportional to 8,852.80, 13,261.76 and 4,945.28 is: 7,408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,852.80 : 13,261.76 = 4,945.28 : x
  2. Step 2: Convert to fraction form
    8,852.80/13,261.76 = 4,945.28/x
  3. Step 3: Cross multiply
    8,852.80x = 13,261.76 × 4,945.28
  4. Step 4: Simplify right side
    8,852.80x = 65,583,116.49
  5. Step 5: Solve for x
    x = 65,583,116.49/8,852.80
  6. Step 6: Final answer
    x = 7,408.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.