Home / 5,228.52-7,215.42-2,990.37

Finding the Fourth Proportional to 5,228.52, 7,215.42 and 2,990.37

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Solution

The fourth proportional to 5,228.52, 7,215.42 and 2,990.37 is: 4,126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.52 : 7,215.42 = 2,990.37 : x
  2. Step 2: Convert to fraction form
    5,228.52/7,215.42 = 2,990.37/x
  3. Step 3: Cross multiply
    5,228.52x = 7,215.42 × 2,990.37
  4. Step 4: Simplify right side
    5,228.52x = 21,576,775.51
  5. Step 5: Solve for x
    x = 21,576,775.51/5,228.52
  6. Step 6: Final answer
    x = 4,126.75

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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.