Home / 1,689.69-2,331.75-943.73

Finding the Fourth Proportional to 1,689.69, 2,331.75 and 943.73

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Solution

The fourth proportional to 1,689.69, 2,331.75 and 943.73 is: 1,302.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.69 : 2,331.75 = 943.73 : x
  2. Step 2: Convert to fraction form
    1,689.69/2,331.75 = 943.73/x
  3. Step 3: Cross multiply
    1,689.69x = 2,331.75 × 943.73
  4. Step 4: Simplify right side
    1,689.69x = 2,200,542.43
  5. Step 5: Solve for x
    x = 2,200,542.43/1,689.69
  6. Step 6: Final answer
    x = 1,302.34

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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.