Home / 5,228.89-7,215.82-2,871.07

Finding the Fourth Proportional to 5,228.89, 7,215.82 and 2,871.07

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Solution

The fourth proportional to 5,228.89, 7,215.82 and 2,871.07 is: 3,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.89 : 7,215.82 = 2,871.07 : x
  2. Step 2: Convert to fraction form
    5,228.89/7,215.82 = 2,871.07/x
  3. Step 3: Cross multiply
    5,228.89x = 7,215.82 × 2,871.07
  4. Step 4: Simplify right side
    5,228.89x = 20,717,099.11
  5. Step 5: Solve for x
    x = 20,717,099.11/5,228.89
  6. Step 6: Final answer
    x = 3,962.05

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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.