Home / 3,827.21-5,281.79-2,148.71

Finding the Fourth Proportional to 3,827.21, 5,281.79 and 2,148.71

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Solution

The fourth proportional to 3,827.21, 5,281.79 and 2,148.71 is: 2,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,827.21 : 5,281.79 = 2,148.71 : x
  2. Step 2: Convert to fraction form
    3,827.21/5,281.79 = 2,148.71/x
  3. Step 3: Cross multiply
    3,827.21x = 5,281.79 × 2,148.71
  4. Step 4: Simplify right side
    3,827.21x = 11,348,997.84
  5. Step 5: Solve for x
    x = 11,348,997.84/3,827.21
  6. Step 6: Final answer
    x = 2,965.35

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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.