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Finding the Fourth Proportional to 5,821.39, 8,730.62 and 2,487.99

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Solution

The fourth proportional to 5,821.39, 8,730.62 and 2,487.99 is: 3,731.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.39 : 8,730.62 = 2,487.99 : x
  2. Step 2: Convert to fraction form
    5,821.39/8,730.62 = 2,487.99/x
  3. Step 3: Cross multiply
    5,821.39x = 8,730.62 × 2,487.99
  4. Step 4: Simplify right side
    5,821.39x = 21,721,686.41
  5. Step 5: Solve for x
    x = 21,721,686.41/5,821.39
  6. Step 6: Final answer
    x = 3,731.36

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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.