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Finding the Fourth Proportional to 1,866.68, 2,576.04 and 1,080.98

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Solution

The fourth proportional to 1,866.68, 2,576.04 and 1,080.98 is: 1,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.68 : 2,576.04 = 1,080.98 : x
  2. Step 2: Convert to fraction form
    1,866.68/2,576.04 = 1,080.98/x
  3. Step 3: Cross multiply
    1,866.68x = 2,576.04 × 1,080.98
  4. Step 4: Simplify right side
    1,866.68x = 2,784,647.72
  5. Step 5: Solve for x
    x = 2,784,647.72/1,866.68
  6. Step 6: Final answer
    x = 1,491.76

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Why These Related Problems?

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