Home / 1,649.92-2,274.96-1,317.28

Finding the Fourth Proportional to 1,649.92, 2,274.96 and 1,317.28

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Solution

The fourth proportional to 1,649.92, 2,274.96 and 1,317.28 is: 1,816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.92 : 2,274.96 = 1,317.28 : x
  2. Step 2: Convert to fraction form
    1,649.92/2,274.96 = 1,317.28/x
  3. Step 3: Cross multiply
    1,649.92x = 2,274.96 × 1,317.28
  4. Step 4: Simplify right side
    1,649.92x = 2,996,759.31
  5. Step 5: Solve for x
    x = 2,996,759.31/1,649.92
  6. Step 6: Final answer
    x = 1,816.31

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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.