Home / 5,163.61-7,125.86-2,805.74

Finding the Fourth Proportional to 5,163.61, 7,125.86 and 2,805.74

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Solution

The fourth proportional to 5,163.61, 7,125.86 and 2,805.74 is: 3,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.61 : 7,125.86 = 2,805.74 : x
  2. Step 2: Convert to fraction form
    5,163.61/7,125.86 = 2,805.74/x
  3. Step 3: Cross multiply
    5,163.61x = 7,125.86 × 2,805.74
  4. Step 4: Simplify right side
    5,163.61x = 19,993,260.78
  5. Step 5: Solve for x
    x = 19,993,260.78/5,163.61
  6. Step 6: Final answer
    x = 3,871.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.