Home / 1,508.20-2,261.82-777.68

Finding the Fourth Proportional to 1,508.20, 2,261.82 and 777.68

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Solution

The fourth proportional to 1,508.20, 2,261.82 and 777.68 is: 1,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.20 : 2,261.82 = 777.68 : x
  2. Step 2: Convert to fraction form
    1,508.20/2,261.82 = 777.68/x
  3. Step 3: Cross multiply
    1,508.20x = 2,261.82 × 777.68
  4. Step 4: Simplify right side
    1,508.20x = 1,758,972.18
  5. Step 5: Solve for x
    x = 1,758,972.18/1,508.20
  6. Step 6: Final answer
    x = 1,166.27

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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.