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Finding the Fourth Proportional to 2,595.68, 3,893.50 and 647.87

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Solution

The fourth proportional to 2,595.68, 3,893.50 and 647.87 is: 971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,595.68 : 3,893.50 = 647.87 : x
  2. Step 2: Convert to fraction form
    2,595.68/3,893.50 = 647.87/x
  3. Step 3: Cross multiply
    2,595.68x = 3,893.50 × 647.87
  4. Step 4: Simplify right side
    2,595.68x = 2,522,481.85
  5. Step 5: Solve for x
    x = 2,522,481.85/2,595.68
  6. Step 6: Final answer
    x = 971.80

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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.