Home / 1,341.25-1,846.87-1,189.71

Finding the Fourth Proportional to 1,341.25, 1,846.87 and 1,189.71

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Solution

The fourth proportional to 1,341.25, 1,846.87 and 1,189.71 is: 1,638.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.25 : 1,846.87 = 1,189.71 : x
  2. Step 2: Convert to fraction form
    1,341.25/1,846.87 = 1,189.71/x
  3. Step 3: Cross multiply
    1,341.25x = 1,846.87 × 1,189.71
  4. Step 4: Simplify right side
    1,341.25x = 2,197,236.73
  5. Step 5: Solve for x
    x = 2,197,236.73/1,341.25
  6. Step 6: Final answer
    x = 1,638.20

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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.