Home / 1,689.58-2,331.66-943.50

Finding the Fourth Proportional to 1,689.58, 2,331.66 and 943.50

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Solution

The fourth proportional to 1,689.58, 2,331.66 and 943.50 is: 1,302.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.58 : 2,331.66 = 943.50 : x
  2. Step 2: Convert to fraction form
    1,689.58/2,331.66 = 943.50/x
  3. Step 3: Cross multiply
    1,689.58x = 2,331.66 × 943.50
  4. Step 4: Simplify right side
    1,689.58x = 2,199,921.21
  5. Step 5: Solve for x
    x = 2,199,921.21/1,689.58
  6. Step 6: Final answer
    x = 1,302.05

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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.