Home / 1,689.66-2,331.69-943.59

Finding the Fourth Proportional to 1,689.66, 2,331.69 and 943.59

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Solution

The fourth proportional to 1,689.66, 2,331.69 and 943.59 is: 1,302.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.66 : 2,331.69 = 943.59 : x
  2. Step 2: Convert to fraction form
    1,689.66/2,331.69 = 943.59/x
  3. Step 3: Cross multiply
    1,689.66x = 2,331.69 × 943.59
  4. Step 4: Simplify right side
    1,689.66x = 2,200,159.37
  5. Step 5: Solve for x
    x = 2,200,159.37/1,689.66
  6. Step 6: Final answer
    x = 1,302.13

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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.