Home / 1,276.16-1,912.26-1,080.25

Finding the Fourth Proportional to 1,276.16, 1,912.26 and 1,080.25

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Solution

The fourth proportional to 1,276.16, 1,912.26 and 1,080.25 is: 1,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.16 : 1,912.26 = 1,080.25 : x
  2. Step 2: Convert to fraction form
    1,276.16/1,912.26 = 1,080.25/x
  3. Step 3: Cross multiply
    1,276.16x = 1,912.26 × 1,080.25
  4. Step 4: Simplify right side
    1,276.16x = 2,065,718.87
  5. Step 5: Solve for x
    x = 2,065,718.87/1,276.16
  6. Step 6: Final answer
    x = 1,618.70

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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.