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Finding the Fourth Proportional to 4,861.60, 7,291.52 and 1,398

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Solution

The fourth proportional to 4,861.60, 7,291.52 and 1,398 is: 2,096.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,861.60 : 7,291.52 = 1,398 : x
  2. Step 2: Convert to fraction form
    4,861.60/7,291.52 = 1,398/x
  3. Step 3: Cross multiply
    4,861.60x = 7,291.52 × 1,398
  4. Step 4: Simplify right side
    4,861.60x = 10,193,544.96
  5. Step 5: Solve for x
    x = 10,193,544.96/4,861.60
  6. Step 6: Final answer
    x = 2,096.75

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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.