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Finding the Fourth Proportional to 2,896, 4,339.92 and 1,251.28

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Solution

The fourth proportional to 2,896, 4,339.92 and 1,251.28 is: 1,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896 : 4,339.92 = 1,251.28 : x
  2. Step 2: Convert to fraction form
    2,896/4,339.92 = 1,251.28/x
  3. Step 3: Cross multiply
    2,896x = 4,339.92 × 1,251.28
  4. Step 4: Simplify right side
    2,896x = 5,430,455.10
  5. Step 5: Solve for x
    x = 5,430,455.10/2,896
  6. Step 6: Final answer
    x = 1,875.16

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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.