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Finding the Fourth Proportional to 5,287.68, 7,922.88 and 3,333.60

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Solution

The fourth proportional to 5,287.68, 7,922.88 and 3,333.60 is: 4,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.68 : 7,922.88 = 3,333.60 : x
  2. Step 2: Convert to fraction form
    5,287.68/7,922.88 = 3,333.60/x
  3. Step 3: Cross multiply
    5,287.68x = 7,922.88 × 3,333.60
  4. Step 4: Simplify right side
    5,287.68x = 26,411,712.77
  5. Step 5: Solve for x
    x = 26,411,712.77/5,287.68
  6. Step 6: Final answer
    x = 4,994.95

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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.