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Finding the Fourth Proportional to 2,678.64, 3,696.50 and 1,499.72

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Solution

The fourth proportional to 2,678.64, 3,696.50 and 1,499.72 is: 2,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.64 : 3,696.50 = 1,499.72 : x
  2. Step 2: Convert to fraction form
    2,678.64/3,696.50 = 1,499.72/x
  3. Step 3: Cross multiply
    2,678.64x = 3,696.50 × 1,499.72
  4. Step 4: Simplify right side
    2,678.64x = 5,543,689.00
  5. Step 5: Solve for x
    x = 5,543,689.00/2,678.64
  6. Step 6: Final answer
    x = 2,069.59

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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.