Home / 5,228.11-7,216.13-2,990.69

Finding the Fourth Proportional to 5,228.11, 7,216.13 and 2,990.69

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Solution

The fourth proportional to 5,228.11, 7,216.13 and 2,990.69 is: 4,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.11 : 7,216.13 = 2,990.69 : x
  2. Step 2: Convert to fraction form
    5,228.11/7,216.13 = 2,990.69/x
  3. Step 3: Cross multiply
    5,228.11x = 7,216.13 × 2,990.69
  4. Step 4: Simplify right side
    5,228.11x = 21,581,185.26
  5. Step 5: Solve for x
    x = 21,581,185.26/5,228.11
  6. Step 6: Final answer
    x = 4,127.91

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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.