Home / 5,228.89-7,212.85-3,131.80

Finding the Fourth Proportional to 5,228.89, 7,212.85 and 3,131.80

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Solution

The fourth proportional to 5,228.89, 7,212.85 and 3,131.80 is: 4,320.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.89 : 7,212.85 = 3,131.80 : x
  2. Step 2: Convert to fraction form
    5,228.89/7,212.85 = 3,131.80/x
  3. Step 3: Cross multiply
    5,228.89x = 7,212.85 × 3,131.80
  4. Step 4: Simplify right side
    5,228.89x = 22,589,203.63
  5. Step 5: Solve for x
    x = 22,589,203.63/5,228.89
  6. Step 6: Final answer
    x = 4,320.08

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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.