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Finding the Fourth Proportional to 1,867.84, 2,798.52 and 1,666.96

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Solution

The fourth proportional to 1,867.84, 2,798.52 and 1,666.96 is: 2,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.84 : 2,798.52 = 1,666.96 : x
  2. Step 2: Convert to fraction form
    1,867.84/2,798.52 = 1,666.96/x
  3. Step 3: Cross multiply
    1,867.84x = 2,798.52 × 1,666.96
  4. Step 4: Simplify right side
    1,867.84x = 4,665,020.90
  5. Step 5: Solve for x
    x = 4,665,020.90/1,867.84
  6. Step 6: Final answer
    x = 2,497.55

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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.