Home / 2,724.79-4,086.90-777.16

Finding the Fourth Proportional to 2,724.79, 4,086.90 and 777.16

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Solution

The fourth proportional to 2,724.79, 4,086.90 and 777.16 is: 1,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,724.79 : 4,086.90 = 777.16 : x
  2. Step 2: Convert to fraction form
    2,724.79/4,086.90 = 777.16/x
  3. Step 3: Cross multiply
    2,724.79x = 4,086.90 × 777.16
  4. Step 4: Simplify right side
    2,724.79x = 3,176,175.20
  5. Step 5: Solve for x
    x = 3,176,175.20/2,724.79
  6. Step 6: Final answer
    x = 1,165.66

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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.