Home / 3,969.66-5,477.91-2,177.13

Finding the Fourth Proportional to 3,969.66, 5,477.91 and 2,177.13

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Solution

The fourth proportional to 3,969.66, 5,477.91 and 2,177.13 is: 3,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.66 : 5,477.91 = 2,177.13 : x
  2. Step 2: Convert to fraction form
    3,969.66/5,477.91 = 2,177.13/x
  3. Step 3: Cross multiply
    3,969.66x = 5,477.91 × 2,177.13
  4. Step 4: Simplify right side
    3,969.66x = 11,926,122.20
  5. Step 5: Solve for x
    x = 11,926,122.20/3,969.66
  6. Step 6: Final answer
    x = 3,004.32

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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.