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Finding the Fourth Proportional to 5,603.68, 8,406.52 and 1,905.69

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Solution

The fourth proportional to 5,603.68, 8,406.52 and 1,905.69 is: 2,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,603.68 : 8,406.52 = 1,905.69 : x
  2. Step 2: Convert to fraction form
    5,603.68/8,406.52 = 1,905.69/x
  3. Step 3: Cross multiply
    5,603.68x = 8,406.52 × 1,905.69
  4. Step 4: Simplify right side
    5,603.68x = 16,020,247.86
  5. Step 5: Solve for x
    x = 16,020,247.86/5,603.68
  6. Step 6: Final answer
    x = 2,858.88

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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.