Home / 1,166.31-1,749.25-386.19

Finding the Fourth Proportional to 1,166.31, 1,749.25 and 386.19

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Solution

The fourth proportional to 1,166.31, 1,749.25 and 386.19 is: 579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.31 : 1,749.25 = 386.19 : x
  2. Step 2: Convert to fraction form
    1,166.31/1,749.25 = 386.19/x
  3. Step 3: Cross multiply
    1,166.31x = 1,749.25 × 386.19
  4. Step 4: Simplify right side
    1,166.31x = 675,542.86
  5. Step 5: Solve for x
    x = 675,542.86/1,166.31
  6. Step 6: Final answer
    x = 579.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.