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Finding the Fourth Proportional to 2,356, 3,251.28 and 1,528.48

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Solution

The fourth proportional to 2,356, 3,251.28 and 1,528.48 is: 2,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356 : 3,251.28 = 1,528.48 : x
  2. Step 2: Convert to fraction form
    2,356/3,251.28 = 1,528.48/x
  3. Step 3: Cross multiply
    2,356x = 3,251.28 × 1,528.48
  4. Step 4: Simplify right side
    2,356x = 4,969,516.45
  5. Step 5: Solve for x
    x = 4,969,516.45/2,356
  6. Step 6: Final answer
    x = 2,109.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.