Home / 3,151.12-4,345.32-2,965.36

Finding the Fourth Proportional to 3,151.12, 4,345.32 and 2,965.36

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Solution

The fourth proportional to 3,151.12, 4,345.32 and 2,965.36 is: 4,089.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.12 : 4,345.32 = 2,965.36 : x
  2. Step 2: Convert to fraction form
    3,151.12/4,345.32 = 2,965.36/x
  3. Step 3: Cross multiply
    3,151.12x = 4,345.32 × 2,965.36
  4. Step 4: Simplify right side
    3,151.12x = 12,885,438.12
  5. Step 5: Solve for x
    x = 12,885,438.12/3,151.12
  6. Step 6: Final answer
    x = 4,089.16

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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.