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Finding the Fourth Proportional to 1,866.27, 2,575 and 1,568.64

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Solution

The fourth proportional to 1,866.27, 2,575 and 1,568.64 is: 2,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.27 : 2,575 = 1,568.64 : x
  2. Step 2: Convert to fraction form
    1,866.27/2,575 = 1,568.64/x
  3. Step 3: Cross multiply
    1,866.27x = 2,575 × 1,568.64
  4. Step 4: Simplify right side
    1,866.27x = 4,039,248.00
  5. Step 5: Solve for x
    x = 4,039,248.00/1,866.27
  6. Step 6: Final answer
    x = 2,164.34

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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.