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Finding the Fourth Proportional to 3,068.60, 4,601.76 and 988.08

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Solution

The fourth proportional to 3,068.60, 4,601.76 and 988.08 is: 1,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,068.60 : 4,601.76 = 988.08 : x
  2. Step 2: Convert to fraction form
    3,068.60/4,601.76 = 988.08/x
  3. Step 3: Cross multiply
    3,068.60x = 4,601.76 × 988.08
  4. Step 4: Simplify right side
    3,068.60x = 4,546,907.02
  5. Step 5: Solve for x
    x = 4,546,907.02/3,068.60
  6. Step 6: Final answer
    x = 1,481.75

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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.