Home / 1,909.51-2,634.96-1,201.12

Finding the Fourth Proportional to 1,909.51, 2,634.96 and 1,201.12

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Solution

The fourth proportional to 1,909.51, 2,634.96 and 1,201.12 is: 1,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.51 : 2,634.96 = 1,201.12 : x
  2. Step 2: Convert to fraction form
    1,909.51/2,634.96 = 1,201.12/x
  3. Step 3: Cross multiply
    1,909.51x = 2,634.96 × 1,201.12
  4. Step 4: Simplify right side
    1,909.51x = 3,164,903.16
  5. Step 5: Solve for x
    x = 3,164,903.16/1,909.51
  6. Step 6: Final answer
    x = 1,657.44

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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.