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Finding the Fourth Proportional to 1,871.28, 2,803.64 and 896.08

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Solution

The fourth proportional to 1,871.28, 2,803.64 and 896.08 is: 1,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.28 : 2,803.64 = 896.08 : x
  2. Step 2: Convert to fraction form
    1,871.28/2,803.64 = 896.08/x
  3. Step 3: Cross multiply
    1,871.28x = 2,803.64 × 896.08
  4. Step 4: Simplify right side
    1,871.28x = 2,512,285.73
  5. Step 5: Solve for x
    x = 2,512,285.73/1,871.28
  6. Step 6: Final answer
    x = 1,342.55

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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.