Home / 2,626.29-3,939.84-777.69

Finding the Fourth Proportional to 2,626.29, 3,939.84 and 777.69

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Solution

The fourth proportional to 2,626.29, 3,939.84 and 777.69 is: 1,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.29 : 3,939.84 = 777.69 : x
  2. Step 2: Convert to fraction form
    2,626.29/3,939.84 = 777.69/x
  3. Step 3: Cross multiply
    2,626.29x = 3,939.84 × 777.69
  4. Step 4: Simplify right side
    2,626.29x = 3,063,974.17
  5. Step 5: Solve for x
    x = 3,063,974.17/2,626.29
  6. Step 6: Final answer
    x = 1,166.65

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1.5x scale

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.