Home / 1,945.81-2,684.91-1,160.11

Finding the Fourth Proportional to 1,945.81, 2,684.91 and 1,160.11

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Solution

The fourth proportional to 1,945.81, 2,684.91 and 1,160.11 is: 1,600.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.81 : 2,684.91 = 1,160.11 : x
  2. Step 2: Convert to fraction form
    1,945.81/2,684.91 = 1,160.11/x
  3. Step 3: Cross multiply
    1,945.81x = 2,684.91 × 1,160.11
  4. Step 4: Simplify right side
    1,945.81x = 3,114,790.94
  5. Step 5: Solve for x
    x = 3,114,790.94/1,945.81
  6. Step 6: Final answer
    x = 1,600.77

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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.