Home / 7,127.89-9,836.67-3,984.28

Finding the Fourth Proportional to 7,127.89, 9,836.67 and 3,984.28

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Solution

The fourth proportional to 7,127.89, 9,836.67 and 3,984.28 is: 5,498.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.89 : 9,836.67 = 3,984.28 : x
  2. Step 2: Convert to fraction form
    7,127.89/9,836.67 = 3,984.28/x
  3. Step 3: Cross multiply
    7,127.89x = 9,836.67 × 3,984.28
  4. Step 4: Simplify right side
    7,127.89x = 39,192,047.55
  5. Step 5: Solve for x
    x = 39,192,047.55/7,127.89
  6. Step 6: Final answer
    x = 5,498.41

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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.