Home / 5,123.28-7,686.81-2,004.78

Finding the Fourth Proportional to 5,123.28, 7,686.81 and 2,004.78

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Solution

The fourth proportional to 5,123.28, 7,686.81 and 2,004.78 is: 3,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.28 : 7,686.81 = 2,004.78 : x
  2. Step 2: Convert to fraction form
    5,123.28/7,686.81 = 2,004.78/x
  3. Step 3: Cross multiply
    5,123.28x = 7,686.81 × 2,004.78
  4. Step 4: Simplify right side
    5,123.28x = 15,410,362.95
  5. Step 5: Solve for x
    x = 15,410,362.95/5,123.28
  6. Step 6: Final answer
    x = 3,007.91

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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.