Home / 2,625.23-3,938.21-776.49

Finding the Fourth Proportional to 2,625.23, 3,938.21 and 776.49

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Solution

The fourth proportional to 2,625.23, 3,938.21 and 776.49 is: 1,164.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.23 : 3,938.21 = 776.49 : x
  2. Step 2: Convert to fraction form
    2,625.23/3,938.21 = 776.49/x
  3. Step 3: Cross multiply
    2,625.23x = 3,938.21 × 776.49
  4. Step 4: Simplify right side
    2,625.23x = 3,057,976.80
  5. Step 5: Solve for x
    x = 3,057,976.80/2,625.23
  6. Step 6: Final answer
    x = 1,164.84

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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.