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Finding the Fourth Proportional to 5,780.98, 8,671.16 and 1,621.27

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Solution

The fourth proportional to 5,780.98, 8,671.16 and 1,621.27 is: 2,431.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.98 : 8,671.16 = 1,621.27 : x
  2. Step 2: Convert to fraction form
    5,780.98/8,671.16 = 1,621.27/x
  3. Step 3: Cross multiply
    5,780.98x = 8,671.16 × 1,621.27
  4. Step 4: Simplify right side
    5,780.98x = 14,058,333.13
  5. Step 5: Solve for x
    x = 14,058,333.13/5,780.98
  6. Step 6: Final answer
    x = 2,431.83

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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.