Home / 5,123.56-7,688.40-2,201.80

Finding the Fourth Proportional to 5,123.56, 7,688.40 and 2,201.80

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Solution

The fourth proportional to 5,123.56, 7,688.40 and 2,201.80 is: 3,304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.56 : 7,688.40 = 2,201.80 : x
  2. Step 2: Convert to fraction form
    5,123.56/7,688.40 = 2,201.80/x
  3. Step 3: Cross multiply
    5,123.56x = 7,688.40 × 2,201.80
  4. Step 4: Simplify right side
    5,123.56x = 16,928,319.12
  5. Step 5: Solve for x
    x = 16,928,319.12/5,123.56
  6. Step 6: Final answer
    x = 3,304.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.