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Finding the Fourth Proportional to 1,866.31, 2,791.76 and 1,533.51

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Solution

The fourth proportional to 1,866.31, 2,791.76 and 1,533.51 is: 2,293.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.31 : 2,791.76 = 1,533.51 : x
  2. Step 2: Convert to fraction form
    1,866.31/2,791.76 = 1,533.51/x
  3. Step 3: Cross multiply
    1,866.31x = 2,791.76 × 1,533.51
  4. Step 4: Simplify right side
    1,866.31x = 4,281,184.21
  5. Step 5: Solve for x
    x = 4,281,184.21/1,866.31
  6. Step 6: Final answer
    x = 2,293.93

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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.