Home / 2,102.26-2,901.46-1,218.58

Finding the Fourth Proportional to 2,102.26, 2,901.46 and 1,218.58

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Solution

The fourth proportional to 2,102.26, 2,901.46 and 1,218.58 is: 1,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.26 : 2,901.46 = 1,218.58 : x
  2. Step 2: Convert to fraction form
    2,102.26/2,901.46 = 1,218.58/x
  3. Step 3: Cross multiply
    2,102.26x = 2,901.46 × 1,218.58
  4. Step 4: Simplify right side
    2,102.26x = 3,535,646.62
  5. Step 5: Solve for x
    x = 3,535,646.62/2,102.26
  6. Step 6: Final answer
    x = 1,681.83

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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.