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Finding the Fourth Proportional to 8,817.84, 12,168.80 and 4,838.72

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Solution

The fourth proportional to 8,817.84, 12,168.80 and 4,838.72 is: 6,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.84 : 12,168.80 = 4,838.72 : x
  2. Step 2: Convert to fraction form
    8,817.84/12,168.80 = 4,838.72/x
  3. Step 3: Cross multiply
    8,817.84x = 12,168.80 × 4,838.72
  4. Step 4: Simplify right side
    8,817.84x = 58,881,415.94
  5. Step 5: Solve for x
    x = 58,881,415.94/8,817.84
  6. Step 6: Final answer
    x = 6,677.53

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Half scale
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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.