Home / 8,119.19-12,148.59-7,127.33

Finding the Fourth Proportional to 8,119.19, 12,148.59 and 7,127.33

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Solution

The fourth proportional to 8,119.19, 12,148.59 and 7,127.33 is: 10,664.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.19 : 12,148.59 = 7,127.33 : x
  2. Step 2: Convert to fraction form
    8,119.19/12,148.59 = 7,127.33/x
  3. Step 3: Cross multiply
    8,119.19x = 12,148.59 × 7,127.33
  4. Step 4: Simplify right side
    8,119.19x = 86,587,009.96
  5. Step 5: Solve for x
    x = 86,587,009.96/8,119.19
  6. Step 6: Final answer
    x = 10,664.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.