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Finding the Fourth Proportional to 2,424.76, 3,635.32 and 780.36

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Solution

The fourth proportional to 2,424.76, 3,635.32 and 780.36 is: 1,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,424.76 : 3,635.32 = 780.36 : x
  2. Step 2: Convert to fraction form
    2,424.76/3,635.32 = 780.36/x
  3. Step 3: Cross multiply
    2,424.76x = 3,635.32 × 780.36
  4. Step 4: Simplify right side
    2,424.76x = 2,836,858.32
  5. Step 5: Solve for x
    x = 2,836,858.32/2,424.76
  6. Step 6: Final answer
    x = 1,169.95

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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.