Home / 1,742.28-2,405.50-1,212.26

Finding the Fourth Proportional to 1,742.28, 2,405.50 and 1,212.26

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Solution

The fourth proportional to 1,742.28, 2,405.50 and 1,212.26 is: 1,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.28 : 2,405.50 = 1,212.26 : x
  2. Step 2: Convert to fraction form
    1,742.28/2,405.50 = 1,212.26/x
  3. Step 3: Cross multiply
    1,742.28x = 2,405.50 × 1,212.26
  4. Step 4: Simplify right side
    1,742.28x = 2,916,095.82
  5. Step 5: Solve for x
    x = 2,916,095.82/1,742.28
  6. Step 6: Final answer
    x = 1,673.73

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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.