Home / 1,341.20-1,851.72-1,208.36

Finding the Fourth Proportional to 1,341.20, 1,851.72 and 1,208.36

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Solution

The fourth proportional to 1,341.20, 1,851.72 and 1,208.36 is: 1,668.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.20 : 1,851.72 = 1,208.36 : x
  2. Step 2: Convert to fraction form
    1,341.20/1,851.72 = 1,208.36/x
  3. Step 3: Cross multiply
    1,341.20x = 1,851.72 × 1,208.36
  4. Step 4: Simplify right side
    1,341.20x = 2,237,544.38
  5. Step 5: Solve for x
    x = 2,237,544.38/1,341.20
  6. Step 6: Final answer
    x = 1,668.32

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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.