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Finding the Fourth Proportional to 2,800.63, 4,201.89 and 1,157.95

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Solution

The fourth proportional to 2,800.63, 4,201.89 and 1,157.95 is: 1,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.63 : 4,201.89 = 1,157.95 : x
  2. Step 2: Convert to fraction form
    2,800.63/4,201.89 = 1,157.95/x
  3. Step 3: Cross multiply
    2,800.63x = 4,201.89 × 1,157.95
  4. Step 4: Simplify right side
    2,800.63x = 4,865,578.53
  5. Step 5: Solve for x
    x = 4,865,578.53/2,800.63
  6. Step 6: Final answer
    x = 1,737.32

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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.