Home / 1,690.08-2,531.20-995.37

Finding the Fourth Proportional to 1,690.08, 2,531.20 and 995.37

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Solution

The fourth proportional to 1,690.08, 2,531.20 and 995.37 is: 1,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.08 : 2,531.20 = 995.37 : x
  2. Step 2: Convert to fraction form
    1,690.08/2,531.20 = 995.37/x
  3. Step 3: Cross multiply
    1,690.08x = 2,531.20 × 995.37
  4. Step 4: Simplify right side
    1,690.08x = 2,519,480.54
  5. Step 5: Solve for x
    x = 2,519,480.54/1,690.08
  6. Step 6: Final answer
    x = 1,490.75

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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.