Home / 2,627.21-3,939.64-777.98

Finding the Fourth Proportional to 2,627.21, 3,939.64 and 777.98

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Solution

The fourth proportional to 2,627.21, 3,939.64 and 777.98 is: 1,166.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,627.21 : 3,939.64 = 777.98 : x
  2. Step 2: Convert to fraction form
    2,627.21/3,939.64 = 777.98/x
  3. Step 3: Cross multiply
    2,627.21x = 3,939.64 × 777.98
  4. Step 4: Simplify right side
    2,627.21x = 3,064,957.95
  5. Step 5: Solve for x
    x = 3,064,957.95/2,627.21
  6. Step 6: Final answer
    x = 1,166.62

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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.