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Finding the Fourth Proportional to 5,666.61, 7,819.69 and 3,148.87

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Solution

The fourth proportional to 5,666.61, 7,819.69 and 3,148.87 is: 4,345.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.61 : 7,819.69 = 3,148.87 : x
  2. Step 2: Convert to fraction form
    5,666.61/7,819.69 = 3,148.87/x
  3. Step 3: Cross multiply
    5,666.61x = 7,819.69 × 3,148.87
  4. Step 4: Simplify right side
    5,666.61x = 24,623,187.25
  5. Step 5: Solve for x
    x = 24,623,187.25/5,666.61
  6. Step 6: Final answer
    x = 4,345.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.