Home / 1,702.12-2,553.66-1,085.80

Finding the Fourth Proportional to 1,702.12, 2,553.66 and 1,085.80

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Solution

The fourth proportional to 1,702.12, 2,553.66 and 1,085.80 is: 1,629.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.12 : 2,553.66 = 1,085.80 : x
  2. Step 2: Convert to fraction form
    1,702.12/2,553.66 = 1,085.80/x
  3. Step 3: Cross multiply
    1,702.12x = 2,553.66 × 1,085.80
  4. Step 4: Simplify right side
    1,702.12x = 2,772,764.03
  5. Step 5: Solve for x
    x = 2,772,764.03/1,702.12
  6. Step 6: Final answer
    x = 1,629.01

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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.