Home / 3,081.38-4,254.54-2,886.98

Finding the Fourth Proportional to 3,081.38, 4,254.54 and 2,886.98

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Solution

The fourth proportional to 3,081.38, 4,254.54 and 2,886.98 is: 3,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.38 : 4,254.54 = 2,886.98 : x
  2. Step 2: Convert to fraction form
    3,081.38/4,254.54 = 2,886.98/x
  3. Step 3: Cross multiply
    3,081.38x = 4,254.54 × 2,886.98
  4. Step 4: Simplify right side
    3,081.38x = 12,282,771.89
  5. Step 5: Solve for x
    x = 12,282,771.89/3,081.38
  6. Step 6: Final answer
    x = 3,986.13

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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.