Home / 2,081.31-2,872.26-1,137.16

Finding the Fourth Proportional to 2,081.31, 2,872.26 and 1,137.16

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Solution

The fourth proportional to 2,081.31, 2,872.26 and 1,137.16 is: 1,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.31 : 2,872.26 = 1,137.16 : x
  2. Step 2: Convert to fraction form
    2,081.31/2,872.26 = 1,137.16/x
  3. Step 3: Cross multiply
    2,081.31x = 2,872.26 × 1,137.16
  4. Step 4: Simplify right side
    2,081.31x = 3,266,219.18
  5. Step 5: Solve for x
    x = 3,266,219.18/2,081.31
  6. Step 6: Final answer
    x = 1,569.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.