Home / 3,934.96-5,430.36-2,166.69

Finding the Fourth Proportional to 3,934.96, 5,430.36 and 2,166.69

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Solution

The fourth proportional to 3,934.96, 5,430.36 and 2,166.69 is: 2,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.96 : 5,430.36 = 2,166.69 : x
  2. Step 2: Convert to fraction form
    3,934.96/5,430.36 = 2,166.69/x
  3. Step 3: Cross multiply
    3,934.96x = 5,430.36 × 2,166.69
  4. Step 4: Simplify right side
    3,934.96x = 11,765,906.71
  5. Step 5: Solve for x
    x = 11,765,906.71/3,934.96
  6. Step 6: Final answer
    x = 2,990.10

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1.5x scale

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.