Home / 1,680.85-2,517.22-1,356.85

Finding the Fourth Proportional to 1,680.85, 2,517.22 and 1,356.85

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Solution

The fourth proportional to 1,680.85, 2,517.22 and 1,356.85 is: 2,032.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.85 : 2,517.22 = 1,356.85 : x
  2. Step 2: Convert to fraction form
    1,680.85/2,517.22 = 1,356.85/x
  3. Step 3: Cross multiply
    1,680.85x = 2,517.22 × 1,356.85
  4. Step 4: Simplify right side
    1,680.85x = 3,415,489.96
  5. Step 5: Solve for x
    x = 3,415,489.96/1,680.85
  6. Step 6: Final answer
    x = 2,032.00

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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.