Home / 5,228.64-7,212.51-3,131.55

Finding the Fourth Proportional to 5,228.64, 7,212.51 and 3,131.55

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Solution

The fourth proportional to 5,228.64, 7,212.51 and 3,131.55 is: 4,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.64 : 7,212.51 = 3,131.55 : x
  2. Step 2: Convert to fraction form
    5,228.64/7,212.51 = 3,131.55/x
  3. Step 3: Cross multiply
    5,228.64x = 7,212.51 × 3,131.55
  4. Step 4: Simplify right side
    5,228.64x = 22,586,335.69
  5. Step 5: Solve for x
    x = 22,586,335.69/5,228.64
  6. Step 6: Final answer
    x = 4,319.73

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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.