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Finding the Fourth Proportional to 2,355.94, 3,251.30 and 1,308

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Solution

The fourth proportional to 2,355.94, 3,251.30 and 1,308 is: 1,805.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,355.94 : 3,251.30 = 1,308 : x
  2. Step 2: Convert to fraction form
    2,355.94/3,251.30 = 1,308/x
  3. Step 3: Cross multiply
    2,355.94x = 3,251.30 × 1,308
  4. Step 4: Simplify right side
    2,355.94x = 4,252,693.86
  5. Step 5: Solve for x
    x = 4,252,693.86/2,355.94
  6. Step 6: Final answer
    x = 1,805.10

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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.