Home / 7,128.27-9,837.03-3,984.45

Finding the Fourth Proportional to 7,128.27, 9,837.03 and 3,984.45

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Solution

The fourth proportional to 7,128.27, 9,837.03 and 3,984.45 is: 5,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.27 : 9,837.03 = 3,984.45 : x
  2. Step 2: Convert to fraction form
    7,128.27/9,837.03 = 3,984.45/x
  3. Step 3: Cross multiply
    7,128.27x = 9,837.03 × 3,984.45
  4. Step 4: Simplify right side
    7,128.27x = 39,195,154.18
  5. Step 5: Solve for x
    x = 39,195,154.18/7,128.27
  6. Step 6: Final answer
    x = 5,498.55

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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.