Home / 3,119.61-4,280.80-2,837.68

Finding the Fourth Proportional to 3,119.61, 4,280.80 and 2,837.68

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Solution

The fourth proportional to 3,119.61, 4,280.80 and 2,837.68 is: 3,893.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.61 : 4,280.80 = 2,837.68 : x
  2. Step 2: Convert to fraction form
    3,119.61/4,280.80 = 2,837.68/x
  3. Step 3: Cross multiply
    3,119.61x = 4,280.80 × 2,837.68
  4. Step 4: Simplify right side
    3,119.61x = 12,147,552.15
  5. Step 5: Solve for x
    x = 12,147,552.15/3,119.61
  6. Step 6: Final answer
    x = 3,893.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.