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Finding the Fourth Proportional to 3,409.86, 5,114.90 and 944.47

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Solution

The fourth proportional to 3,409.86, 5,114.90 and 944.47 is: 1,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.86 : 5,114.90 = 944.47 : x
  2. Step 2: Convert to fraction form
    3,409.86/5,114.90 = 944.47/x
  3. Step 3: Cross multiply
    3,409.86x = 5,114.90 × 944.47
  4. Step 4: Simplify right side
    3,409.86x = 4,830,869.60
  5. Step 5: Solve for x
    x = 4,830,869.60/3,409.86
  6. Step 6: Final answer
    x = 1,416.74

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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.