Home / 3,827.41-5,281.80-2,148.78

Finding the Fourth Proportional to 3,827.41, 5,281.80 and 2,148.78

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Solution

The fourth proportional to 3,827.41, 5,281.80 and 2,148.78 is: 2,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,827.41 : 5,281.80 = 2,148.78 : x
  2. Step 2: Convert to fraction form
    3,827.41/5,281.80 = 2,148.78/x
  3. Step 3: Cross multiply
    3,827.41x = 5,281.80 × 2,148.78
  4. Step 4: Simplify right side
    3,827.41x = 11,349,426.20
  5. Step 5: Solve for x
    x = 11,349,426.20/3,827.41
  6. Step 6: Final answer
    x = 2,965.30

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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.