Home / 7,128.10-9,836.51-3,941.33

Finding the Fourth Proportional to 7,128.10, 9,836.51 and 3,941.33

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Solution

The fourth proportional to 7,128.10, 9,836.51 and 3,941.33 is: 5,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.10 : 9,836.51 = 3,941.33 : x
  2. Step 2: Convert to fraction form
    7,128.10/9,836.51 = 3,941.33/x
  3. Step 3: Cross multiply
    7,128.10x = 9,836.51 × 3,941.33
  4. Step 4: Simplify right side
    7,128.10x = 38,768,863.07
  5. Step 5: Solve for x
    x = 38,768,863.07/7,128.10
  6. Step 6: Final answer
    x = 5,438.88

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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.