Home / 1,689.54-2,331.36-943.26

Finding the Fourth Proportional to 1,689.54, 2,331.36 and 943.26

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Solution

The fourth proportional to 1,689.54, 2,331.36 and 943.26 is: 1,301.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.54 : 2,331.36 = 943.26 : x
  2. Step 2: Convert to fraction form
    1,689.54/2,331.36 = 943.26/x
  3. Step 3: Cross multiply
    1,689.54x = 2,331.36 × 943.26
  4. Step 4: Simplify right side
    1,689.54x = 2,199,078.63
  5. Step 5: Solve for x
    x = 2,199,078.63/1,689.54
  6. Step 6: Final answer
    x = 1,301.58

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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.