Home / 5,228.94-7,215.94-2,871.24

Finding the Fourth Proportional to 5,228.94, 7,215.94 and 2,871.24

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Solution

The fourth proportional to 5,228.94, 7,215.94 and 2,871.24 is: 3,962.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.94 : 7,215.94 = 2,871.24 : x
  2. Step 2: Convert to fraction form
    5,228.94/7,215.94 = 2,871.24/x
  3. Step 3: Cross multiply
    5,228.94x = 7,215.94 × 2,871.24
  4. Step 4: Simplify right side
    5,228.94x = 20,718,695.57
  5. Step 5: Solve for x
    x = 20,718,695.57/5,228.94
  6. Step 6: Final answer
    x = 3,962.31

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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.