Home / 5,228.69-7,215.75-2,871.05

Finding the Fourth Proportional to 5,228.69, 7,215.75 and 2,871.05

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Solution

The fourth proportional to 5,228.69, 7,215.75 and 2,871.05 is: 3,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.69 : 7,215.75 = 2,871.05 : x
  2. Step 2: Convert to fraction form
    5,228.69/7,215.75 = 2,871.05/x
  3. Step 3: Cross multiply
    5,228.69x = 7,215.75 × 2,871.05
  4. Step 4: Simplify right side
    5,228.69x = 20,716,742.96
  5. Step 5: Solve for x
    x = 20,716,742.96/5,228.69
  6. Step 6: Final answer
    x = 3,962.13

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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.