Home / 7,240.12-10,863.78-2,860.72

Finding the Fourth Proportional to 7,240.12, 10,863.78 and 2,860.72

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Solution

The fourth proportional to 7,240.12, 10,863.78 and 2,860.72 is: 4,292.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.12 : 10,863.78 = 2,860.72 : x
  2. Step 2: Convert to fraction form
    7,240.12/10,863.78 = 2,860.72/x
  3. Step 3: Cross multiply
    7,240.12x = 10,863.78 × 2,860.72
  4. Step 4: Simplify right side
    7,240.12x = 31,078,232.72
  5. Step 5: Solve for x
    x = 31,078,232.72/7,240.12
  6. Step 6: Final answer
    x = 4,292.50

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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.