Home / 5,228.91-7,216.07-2,990.79

Finding the Fourth Proportional to 5,228.91, 7,216.07 and 2,990.79

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Solution

The fourth proportional to 5,228.91, 7,216.07 and 2,990.79 is: 4,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.91 : 7,216.07 = 2,990.79 : x
  2. Step 2: Convert to fraction form
    5,228.91/7,216.07 = 2,990.79/x
  3. Step 3: Cross multiply
    5,228.91x = 7,216.07 × 2,990.79
  4. Step 4: Simplify right side
    5,228.91x = 21,581,735.04
  5. Step 5: Solve for x
    x = 21,581,735.04/5,228.91
  6. Step 6: Final answer
    x = 4,127.39

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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.