Home / 2,626.30-3,939.65-777.39

Finding the Fourth Proportional to 2,626.30, 3,939.65 and 777.39

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Solution

The fourth proportional to 2,626.30, 3,939.65 and 777.39 is: 1,166.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.30 : 3,939.65 = 777.39 : x
  2. Step 2: Convert to fraction form
    2,626.30/3,939.65 = 777.39/x
  3. Step 3: Cross multiply
    2,626.30x = 3,939.65 × 777.39
  4. Step 4: Simplify right side
    2,626.30x = 3,062,644.51
  5. Step 5: Solve for x
    x = 3,062,644.51/2,626.30
  6. Step 6: Final answer
    x = 1,166.14

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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.