Home / 3,827.63-5,280.80-2,148.80

Finding the Fourth Proportional to 3,827.63, 5,280.80 and 2,148.80

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Solution

The fourth proportional to 3,827.63, 5,280.80 and 2,148.80 is: 2,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,827.63 : 5,280.80 = 2,148.80 : x
  2. Step 2: Convert to fraction form
    3,827.63/5,280.80 = 2,148.80/x
  3. Step 3: Cross multiply
    3,827.63x = 5,280.80 × 2,148.80
  4. Step 4: Simplify right side
    3,827.63x = 11,347,383.04
  5. Step 5: Solve for x
    x = 11,347,383.04/3,827.63
  6. Step 6: Final answer
    x = 2,964.60

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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.