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Finding the Fourth Proportional to 3,827.12, 5,281.12 and 2,254.88

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Solution

The fourth proportional to 3,827.12, 5,281.12 and 2,254.88 is: 3,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,827.12 : 5,281.12 = 2,254.88 : x
  2. Step 2: Convert to fraction form
    3,827.12/5,281.12 = 2,254.88/x
  3. Step 3: Cross multiply
    3,827.12x = 5,281.12 × 2,254.88
  4. Step 4: Simplify right side
    3,827.12x = 11,908,291.87
  5. Step 5: Solve for x
    x = 11,908,291.87/3,827.12
  6. Step 6: Final answer
    x = 3,111.55

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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.