Home / 7,127.49-9,836.87-3,984.33

Finding the Fourth Proportional to 7,127.49, 9,836.87 and 3,984.33

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Solution

The fourth proportional to 7,127.49, 9,836.87 and 3,984.33 is: 5,498.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.49 : 9,836.87 = 3,984.33 : x
  2. Step 2: Convert to fraction form
    7,127.49/9,836.87 = 3,984.33/x
  3. Step 3: Cross multiply
    7,127.49x = 9,836.87 × 3,984.33
  4. Step 4: Simplify right side
    7,127.49x = 39,193,316.33
  5. Step 5: Solve for x
    x = 39,193,316.33/7,127.49
  6. Step 6: Final answer
    x = 5,498.89

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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.