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Finding the Fourth Proportional to 7,128.83, 10,690.19 and 2,449.31

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Solution

The fourth proportional to 7,128.83, 10,690.19 and 2,449.31 is: 3,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.83 : 10,690.19 = 2,449.31 : x
  2. Step 2: Convert to fraction form
    7,128.83/10,690.19 = 2,449.31/x
  3. Step 3: Cross multiply
    7,128.83x = 10,690.19 × 2,449.31
  4. Step 4: Simplify right side
    7,128.83x = 26,183,606.67
  5. Step 5: Solve for x
    x = 26,183,606.67/7,128.83
  6. Step 6: Final answer
    x = 3,672.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.