Home / 3,926.59-5,413.09-2,807.12

Finding the Fourth Proportional to 3,926.59, 5,413.09 and 2,807.12

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Solution

The fourth proportional to 3,926.59, 5,413.09 and 2,807.12 is: 3,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.59 : 5,413.09 = 2,807.12 : x
  2. Step 2: Convert to fraction form
    3,926.59/5,413.09 = 2,807.12/x
  3. Step 3: Cross multiply
    3,926.59x = 5,413.09 × 2,807.12
  4. Step 4: Simplify right side
    3,926.59x = 15,195,199.72
  5. Step 5: Solve for x
    x = 15,195,199.72/3,926.59
  6. Step 6: Final answer
    x = 3,869.82

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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.