Home / 7,403.78-11,107.49-5,216.78

Finding the Fourth Proportional to 7,403.78, 11,107.49 and 5,216.78

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Solution

The fourth proportional to 7,403.78, 11,107.49 and 5,216.78 is: 7,826.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,403.78 : 11,107.49 = 5,216.78 : x
  2. Step 2: Convert to fraction form
    7,403.78/11,107.49 = 5,216.78/x
  3. Step 3: Cross multiply
    7,403.78x = 11,107.49 × 5,216.78
  4. Step 4: Simplify right side
    7,403.78x = 57,945,338.81
  5. Step 5: Solve for x
    x = 57,945,338.81/7,403.78
  6. Step 6: Final answer
    x = 7,826.45

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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.