Home / 7,127.96-9,839.33-6,380.60

Finding the Fourth Proportional to 7,127.96, 9,839.33 and 6,380.60

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Solution

The fourth proportional to 7,127.96, 9,839.33 and 6,380.60 is: 8,807.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.96 : 9,839.33 = 6,380.60 : x
  2. Step 2: Convert to fraction form
    7,127.96/9,839.33 = 6,380.60/x
  3. Step 3: Cross multiply
    7,127.96x = 9,839.33 × 6,380.60
  4. Step 4: Simplify right side
    7,127.96x = 62,780,829.00
  5. Step 5: Solve for x
    x = 62,780,829.00/7,127.96
  6. Step 6: Final answer
    x = 8,807.69

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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.