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Finding the Fourth Proportional to 1,871.00, 2,806.52 and 896.87

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Solution

The fourth proportional to 1,871.00, 2,806.52 and 896.87 is: 1,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.00 : 2,806.52 = 896.87 : x
  2. Step 2: Convert to fraction form
    1,871.00/2,806.52 = 896.87/x
  3. Step 3: Cross multiply
    1,871.00x = 2,806.52 × 896.87
  4. Step 4: Simplify right side
    1,871.00x = 2,517,083.28
  5. Step 5: Solve for x
    x = 2,517,083.28/1,871.00
  6. Step 6: Final answer
    x = 1,345.32

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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.