Home / 1,649.36-2,276.30-985.97

Finding the Fourth Proportional to 1,649.36, 2,276.30 and 985.97

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Solution

The fourth proportional to 1,649.36, 2,276.30 and 985.97 is: 1,360.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.36 : 2,276.30 = 985.97 : x
  2. Step 2: Convert to fraction form
    1,649.36/2,276.30 = 985.97/x
  3. Step 3: Cross multiply
    1,649.36x = 2,276.30 × 985.97
  4. Step 4: Simplify right side
    1,649.36x = 2,244,371.67
  5. Step 5: Solve for x
    x = 2,244,371.67/1,649.36
  6. Step 6: Final answer
    x = 1,360.75

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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.