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Finding the Fourth Proportional to 2,537.50, 3,807.93 and 978.79

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Solution

The fourth proportional to 2,537.50, 3,807.93 and 978.79 is: 1,468.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,537.50 : 3,807.93 = 978.79 : x
  2. Step 2: Convert to fraction form
    2,537.50/3,807.93 = 978.79/x
  3. Step 3: Cross multiply
    2,537.50x = 3,807.93 × 978.79
  4. Step 4: Simplify right side
    2,537.50x = 3,727,163.80
  5. Step 5: Solve for x
    x = 3,727,163.80/2,537.50
  6. Step 6: Final answer
    x = 1,468.83

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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.