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Finding the Fourth Proportional to 2,573.61, 3,860.39 and 625.80

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Solution

The fourth proportional to 2,573.61, 3,860.39 and 625.80 is: 938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,573.61 : 3,860.39 = 625.80 : x
  2. Step 2: Convert to fraction form
    2,573.61/3,860.39 = 625.80/x
  3. Step 3: Cross multiply
    2,573.61x = 3,860.39 × 625.80
  4. Step 4: Simplify right side
    2,573.61x = 2,415,832.06
  5. Step 5: Solve for x
    x = 2,415,832.06/2,573.61
  6. Step 6: Final answer
    x = 938.69

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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.