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Finding the Fourth Proportional to 5,251.28, 7,875.48 and 1,963.28

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Solution

The fourth proportional to 5,251.28, 7,875.48 and 1,963.28 is: 2,944.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.28 : 7,875.48 = 1,963.28 : x
  2. Step 2: Convert to fraction form
    5,251.28/7,875.48 = 1,963.28/x
  3. Step 3: Cross multiply
    5,251.28x = 7,875.48 × 1,963.28
  4. Step 4: Simplify right side
    5,251.28x = 15,461,772.37
  5. Step 5: Solve for x
    x = 15,461,772.37/5,251.28
  6. Step 6: Final answer
    x = 2,944.38

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1.5x scale

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.