Home / 1,266.35-1,895.85-777.92

Finding the Fourth Proportional to 1,266.35, 1,895.85 and 777.92

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Solution

The fourth proportional to 1,266.35, 1,895.85 and 777.92 is: 1,164.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.35 : 1,895.85 = 777.92 : x
  2. Step 2: Convert to fraction form
    1,266.35/1,895.85 = 777.92/x
  3. Step 3: Cross multiply
    1,266.35x = 1,895.85 × 777.92
  4. Step 4: Simplify right side
    1,266.35x = 1,474,810.15
  5. Step 5: Solve for x
    x = 1,474,810.15/1,266.35
  6. Step 6: Final answer
    x = 1,164.62

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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.