Home / 2,790.32-4,185.70-816.00

Finding the Fourth Proportional to 2,790.32, 4,185.70 and 816.00

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Solution

The fourth proportional to 2,790.32, 4,185.70 and 816.00 is: 1,224.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.32 : 4,185.70 = 816.00 : x
  2. Step 2: Convert to fraction form
    2,790.32/4,185.70 = 816.00/x
  3. Step 3: Cross multiply
    2,790.32x = 4,185.70 × 816.00
  4. Step 4: Simplify right side
    2,790.32x = 3,415,527.53
  5. Step 5: Solve for x
    x = 3,415,527.53/2,790.32
  6. Step 6: Final answer
    x = 1,224.06

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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.