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Finding the Fourth Proportional to 2,635.20, 3,952.76 and 786.32

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Solution

The fourth proportional to 2,635.20, 3,952.76 and 786.32 is: 1,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.20 : 3,952.76 = 786.32 : x
  2. Step 2: Convert to fraction form
    2,635.20/3,952.76 = 786.32/x
  3. Step 3: Cross multiply
    2,635.20x = 3,952.76 × 786.32
  4. Step 4: Simplify right side
    2,635.20x = 3,108,134.24
  5. Step 5: Solve for x
    x = 3,108,134.24/2,635.20
  6. Step 6: Final answer
    x = 1,179.47

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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.