Home / 3,715.91-5,126.85-2,122.50

Finding the Fourth Proportional to 3,715.91, 5,126.85 and 2,122.50

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Solution

The fourth proportional to 3,715.91, 5,126.85 and 2,122.50 is: 2,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.91 : 5,126.85 = 2,122.50 : x
  2. Step 2: Convert to fraction form
    3,715.91/5,126.85 = 2,122.50/x
  3. Step 3: Cross multiply
    3,715.91x = 5,126.85 × 2,122.50
  4. Step 4: Simplify right side
    3,715.91x = 10,881,739.13
  5. Step 5: Solve for x
    x = 10,881,739.13/3,715.91
  6. Step 6: Final answer
    x = 2,928.42

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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.