Home / 5,190.66-7,785.97-3,111.29

Finding the Fourth Proportional to 5,190.66, 7,785.97 and 3,111.29

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Solution

The fourth proportional to 5,190.66, 7,785.97 and 3,111.29 is: 4,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.66 : 7,785.97 = 3,111.29 : x
  2. Step 2: Convert to fraction form
    5,190.66/7,785.97 = 3,111.29/x
  3. Step 3: Cross multiply
    5,190.66x = 7,785.97 × 3,111.29
  4. Step 4: Simplify right side
    5,190.66x = 24,224,410.60
  5. Step 5: Solve for x
    x = 24,224,410.60/5,190.66
  6. Step 6: Final answer
    x = 4,666.92

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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.