Home / 7,121.36-9,827.27-3,934.59

Finding the Fourth Proportional to 7,121.36, 9,827.27 and 3,934.59

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Solution

The fourth proportional to 7,121.36, 9,827.27 and 3,934.59 is: 5,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.36 : 9,827.27 = 3,934.59 : x
  2. Step 2: Convert to fraction form
    7,121.36/9,827.27 = 3,934.59/x
  3. Step 3: Cross multiply
    7,121.36x = 9,827.27 × 3,934.59
  4. Step 4: Simplify right side
    7,121.36x = 38,666,265.97
  5. Step 5: Solve for x
    x = 38,666,265.97/7,121.36
  6. Step 6: Final answer
    x = 5,429.62

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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.