Home / 5,228.92-7,215.94-2,871.08

Finding the Fourth Proportional to 5,228.92, 7,215.94 and 2,871.08

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Solution

The fourth proportional to 5,228.92, 7,215.94 and 2,871.08 is: 3,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.92 : 7,215.94 = 2,871.08 : x
  2. Step 2: Convert to fraction form
    5,228.92/7,215.94 = 2,871.08/x
  3. Step 3: Cross multiply
    5,228.92x = 7,215.94 × 2,871.08
  4. Step 4: Simplify right side
    5,228.92x = 20,717,541.02
  5. Step 5: Solve for x
    x = 20,717,541.02/5,228.92
  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.