Home / 5,123.75-7,071.19-2,885.50

Finding the Fourth Proportional to 5,123.75, 7,071.19 and 2,885.50

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Solution

The fourth proportional to 5,123.75, 7,071.19 and 2,885.50 is: 3,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.75 : 7,071.19 = 2,885.50 : x
  2. Step 2: Convert to fraction form
    5,123.75/7,071.19 = 2,885.50/x
  3. Step 3: Cross multiply
    5,123.75x = 7,071.19 × 2,885.50
  4. Step 4: Simplify right side
    5,123.75x = 20,403,883.39
  5. Step 5: Solve for x
    x = 20,403,883.39/5,123.75
  6. Step 6: Final answer
    x = 3,982.21

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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.