Home / 3,151.24-4,719.30-2,415.40

Finding the Fourth Proportional to 3,151.24, 4,719.30 and 2,415.40

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Solution

The fourth proportional to 3,151.24, 4,719.30 and 2,415.40 is: 3,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.24 : 4,719.30 = 2,415.40 : x
  2. Step 2: Convert to fraction form
    3,151.24/4,719.30 = 2,415.40/x
  3. Step 3: Cross multiply
    3,151.24x = 4,719.30 × 2,415.40
  4. Step 4: Simplify right side
    3,151.24x = 11,398,997.22
  5. Step 5: Solve for x
    x = 11,398,997.22/3,151.24
  6. Step 6: Final answer
    x = 3,617.31

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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.