Home / 1,689.44-2,341.35-1,665.96

Finding the Fourth Proportional to 1,689.44, 2,341.35 and 1,665.96

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Solution

The fourth proportional to 1,689.44, 2,341.35 and 1,665.96 is: 2,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.44 : 2,341.35 = 1,665.96 : x
  2. Step 2: Convert to fraction form
    1,689.44/2,341.35 = 1,665.96/x
  3. Step 3: Cross multiply
    1,689.44x = 2,341.35 × 1,665.96
  4. Step 4: Simplify right side
    1,689.44x = 3,900,595.45
  5. Step 5: Solve for x
    x = 3,900,595.45/1,689.44
  6. Step 6: Final answer
    x = 2,308.81

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.