Home / 1,649.64-2,469.54-1,261.08

Finding the Fourth Proportional to 1,649.64, 2,469.54 and 1,261.08

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Solution

The fourth proportional to 1,649.64, 2,469.54 and 1,261.08 is: 1,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.64 : 2,469.54 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    1,649.64/2,469.54 = 1,261.08/x
  3. Step 3: Cross multiply
    1,649.64x = 2,469.54 × 1,261.08
  4. Step 4: Simplify right side
    1,649.64x = 3,114,287.50
  5. Step 5: Solve for x
    x = 3,114,287.50/1,649.64
  6. Step 6: Final answer
    x = 1,887.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.