Home / 8,617.05-11,890.09-5,079.78

Finding the Fourth Proportional to 8,617.05, 11,890.09 and 5,079.78

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Solution

The fourth proportional to 8,617.05, 11,890.09 and 5,079.78 is: 7,009.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.05 : 11,890.09 = 5,079.78 : x
  2. Step 2: Convert to fraction form
    8,617.05/11,890.09 = 5,079.78/x
  3. Step 3: Cross multiply
    8,617.05x = 11,890.09 × 5,079.78
  4. Step 4: Simplify right side
    8,617.05x = 60,399,041.38
  5. Step 5: Solve for x
    x = 60,399,041.38/8,617.05
  6. Step 6: Final answer
    x = 7,009.25

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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.