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Finding the Fourth Proportional to 2,535.62, 3,803.63 and 780.46

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Solution

The fourth proportional to 2,535.62, 3,803.63 and 780.46 is: 1,170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,535.62 : 3,803.63 = 780.46 : x
  2. Step 2: Convert to fraction form
    2,535.62/3,803.63 = 780.46/x
  3. Step 3: Cross multiply
    2,535.62x = 3,803.63 × 780.46
  4. Step 4: Simplify right side
    2,535.62x = 2,968,567.66
  5. Step 5: Solve for x
    x = 2,968,567.66/2,535.62
  6. Step 6: Final answer
    x = 1,170.75

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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.