Home / 7,907.08-11,856.59-2,640.20

Finding the Fourth Proportional to 7,907.08, 11,856.59 and 2,640.20

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Solution

The fourth proportional to 7,907.08, 11,856.59 and 2,640.20 is: 3,958.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.08 : 11,856.59 = 2,640.20 : x
  2. Step 2: Convert to fraction form
    7,907.08/11,856.59 = 2,640.20/x
  3. Step 3: Cross multiply
    7,907.08x = 11,856.59 × 2,640.20
  4. Step 4: Simplify right side
    7,907.08x = 31,303,716.24
  5. Step 5: Solve for x
    x = 31,303,716.24/7,907.08
  6. Step 6: Final answer
    x = 3,958.95

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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.