Home / 8,270.77-11,415.47-5,086.80

Finding the Fourth Proportional to 8,270.77, 11,415.47 and 5,086.80

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Solution

The fourth proportional to 8,270.77, 11,415.47 and 5,086.80 is: 7,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.77 : 11,415.47 = 5,086.80 : x
  2. Step 2: Convert to fraction form
    8,270.77/11,415.47 = 5,086.80/x
  3. Step 3: Cross multiply
    8,270.77x = 11,415.47 × 5,086.80
  4. Step 4: Simplify right side
    8,270.77x = 58,068,187.36
  5. Step 5: Solve for x
    x = 58,068,187.36/8,270.77
  6. Step 6: Final answer
    x = 7,020.89

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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.