Home / 7,620.08-11,431.05-2,688.71

Finding the Fourth Proportional to 7,620.08, 11,431.05 and 2,688.71

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Solution

The fourth proportional to 7,620.08, 11,431.05 and 2,688.71 is: 4,033.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.08 : 11,431.05 = 2,688.71 : x
  2. Step 2: Convert to fraction form
    7,620.08/11,431.05 = 2,688.71/x
  3. Step 3: Cross multiply
    7,620.08x = 11,431.05 × 2,688.71
  4. Step 4: Simplify right side
    7,620.08x = 30,734,765.00
  5. Step 5: Solve for x
    x = 30,734,765.00/7,620.08
  6. Step 6: Final answer
    x = 4,033.39

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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.