Home / 2,151.82-2,969.26-1,207.60

Finding the Fourth Proportional to 2,151.82, 2,969.26 and 1,207.60

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Solution

The fourth proportional to 2,151.82, 2,969.26 and 1,207.60 is: 1,666.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.82 : 2,969.26 = 1,207.60 : x
  2. Step 2: Convert to fraction form
    2,151.82/2,969.26 = 1,207.60/x
  3. Step 3: Cross multiply
    2,151.82x = 2,969.26 × 1,207.60
  4. Step 4: Simplify right side
    2,151.82x = 3,585,678.38
  5. Step 5: Solve for x
    x = 3,585,678.38/2,151.82
  6. Step 6: Final answer
    x = 1,666.35

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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.