Home / 5,220.12-7,203.84-3,123.84

Finding the Fourth Proportional to 5,220.12, 7,203.84 and 3,123.84

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Solution

The fourth proportional to 5,220.12, 7,203.84 and 3,123.84 is: 4,310.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.12 : 7,203.84 = 3,123.84 : x
  2. Step 2: Convert to fraction form
    5,220.12/7,203.84 = 3,123.84/x
  3. Step 3: Cross multiply
    5,220.12x = 7,203.84 × 3,123.84
  4. Step 4: Simplify right side
    5,220.12x = 22,503,643.55
  5. Step 5: Solve for x
    x = 22,503,643.55/5,220.12
  6. Step 6: Final answer
    x = 4,310.94

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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.