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Finding the Fourth Proportional to 5,458.86, 8,188.89 and 1,563.90

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Solution

The fourth proportional to 5,458.86, 8,188.89 and 1,563.90 is: 2,346.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.86 : 8,188.89 = 1,563.90 : x
  2. Step 2: Convert to fraction form
    5,458.86/8,188.89 = 1,563.90/x
  3. Step 3: Cross multiply
    5,458.86x = 8,188.89 × 1,563.90
  4. Step 4: Simplify right side
    5,458.86x = 12,806,605.07
  5. Step 5: Solve for x
    x = 12,806,605.07/5,458.86
  6. Step 6: Final answer
    x = 2,346.02

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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.