Home / 1,689.52-2,331.46-943.46

Finding the Fourth Proportional to 1,689.52, 2,331.46 and 943.46

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Solution

The fourth proportional to 1,689.52, 2,331.46 and 943.46 is: 1,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.52 : 2,331.46 = 943.46 : x
  2. Step 2: Convert to fraction form
    1,689.52/2,331.46 = 943.46/x
  3. Step 3: Cross multiply
    1,689.52x = 2,331.46 × 943.46
  4. Step 4: Simplify right side
    1,689.52x = 2,199,639.25
  5. Step 5: Solve for x
    x = 2,199,639.25/1,689.52
  6. Step 6: Final answer
    x = 1,301.93

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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.