Home / 5,515.06-7,610.79-3,157.20

Finding the Fourth Proportional to 5,515.06, 7,610.79 and 3,157.20

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Solution

The fourth proportional to 5,515.06, 7,610.79 and 3,157.20 is: 4,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.06 : 7,610.79 = 3,157.20 : x
  2. Step 2: Convert to fraction form
    5,515.06/7,610.79 = 3,157.20/x
  3. Step 3: Cross multiply
    5,515.06x = 7,610.79 × 3,157.20
  4. Step 4: Simplify right side
    5,515.06x = 24,028,786.19
  5. Step 5: Solve for x
    x = 24,028,786.19/5,515.06
  6. Step 6: Final answer
    x = 4,356.94

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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.