Home / 3,151.86-4,349.78-2,087.79

Finding the Fourth Proportional to 3,151.86, 4,349.78 and 2,087.79

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Solution

The fourth proportional to 3,151.86, 4,349.78 and 2,087.79 is: 2,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.86 : 4,349.78 = 2,087.79 : x
  2. Step 2: Convert to fraction form
    3,151.86/4,349.78 = 2,087.79/x
  3. Step 3: Cross multiply
    3,151.86x = 4,349.78 × 2,087.79
  4. Step 4: Simplify right side
    3,151.86x = 9,081,427.19
  5. Step 5: Solve for x
    x = 9,081,427.19/3,151.86
  6. Step 6: Final answer
    x = 2,881.29

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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.