Home / 5,228.99-7,215.98-2,871.11

Finding the Fourth Proportional to 5,228.99, 7,215.98 and 2,871.11

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Solution

The fourth proportional to 5,228.99, 7,215.98 and 2,871.11 is: 3,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.99 : 7,215.98 = 2,871.11 : x
  2. Step 2: Convert to fraction form
    5,228.99/7,215.98 = 2,871.11/x
  3. Step 3: Cross multiply
    5,228.99x = 7,215.98 × 2,871.11
  4. Step 4: Simplify right side
    5,228.99x = 20,717,821.90
  5. Step 5: Solve for x
    x = 20,717,821.90/5,228.99
  6. Step 6: Final answer
    x = 3,962.11

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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.