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Finding the Fourth Proportional to 4,956, 7,436.88 and 2,220

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Solution

The fourth proportional to 4,956, 7,436.88 and 2,220 is: 3,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,956 : 7,436.88 = 2,220 : x
  2. Step 2: Convert to fraction form
    4,956/7,436.88 = 2,220/x
  3. Step 3: Cross multiply
    4,956x = 7,436.88 × 2,220
  4. Step 4: Simplify right side
    4,956x = 16,509,873.60
  5. Step 5: Solve for x
    x = 16,509,873.60/4,956
  6. Step 6: Final answer
    x = 3,331.29

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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.