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Finding the Fourth Proportional to 1,574.27, 2,172.52 and 866.14

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Solution

The fourth proportional to 1,574.27, 2,172.52 and 866.14 is: 1,195.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.27 : 2,172.52 = 866.14 : x
  2. Step 2: Convert to fraction form
    1,574.27/2,172.52 = 866.14/x
  3. Step 3: Cross multiply
    1,574.27x = 2,172.52 × 866.14
  4. Step 4: Simplify right side
    1,574.27x = 1,881,706.47
  5. Step 5: Solve for x
    x = 1,881,706.47/1,574.27
  6. Step 6: Final answer
    x = 1,195.29

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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.