Home / 3,934.68-5,430.06-2,166.18

Finding the Fourth Proportional to 3,934.68, 5,430.06 and 2,166.18

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Solution

The fourth proportional to 3,934.68, 5,430.06 and 2,166.18 is: 2,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.68 : 5,430.06 = 2,166.18 : x
  2. Step 2: Convert to fraction form
    3,934.68/5,430.06 = 2,166.18/x
  3. Step 3: Cross multiply
    3,934.68x = 5,430.06 × 2,166.18
  4. Step 4: Simplify right side
    3,934.68x = 11,762,487.37
  5. Step 5: Solve for x
    x = 11,762,487.37/3,934.68
  6. Step 6: Final answer
    x = 2,989.44

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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.