Home / 1,690.23-2,331.20-1,100.96

Finding the Fourth Proportional to 1,690.23, 2,331.20 and 1,100.96

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Solution

The fourth proportional to 1,690.23, 2,331.20 and 1,100.96 is: 1,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.23 : 2,331.20 = 1,100.96 : x
  2. Step 2: Convert to fraction form
    1,690.23/2,331.20 = 1,100.96/x
  3. Step 3: Cross multiply
    1,690.23x = 2,331.20 × 1,100.96
  4. Step 4: Simplify right side
    1,690.23x = 2,566,540.79
  5. Step 5: Solve for x
    x = 2,566,540.79/1,690.23
  6. Step 6: Final answer
    x = 1,518.46

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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.