Home / 2,584.80-3,877.20-2,123.10

Finding the Fourth Proportional to 2,584.80, 3,877.20 and 2,123.10

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Solution

The fourth proportional to 2,584.80, 3,877.20 and 2,123.10 is: 3,184.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.80 : 3,877.20 = 2,123.10 : x
  2. Step 2: Convert to fraction form
    2,584.80/3,877.20 = 2,123.10/x
  3. Step 3: Cross multiply
    2,584.80x = 3,877.20 × 2,123.10
  4. Step 4: Simplify right side
    2,584.80x = 8,231,683.32
  5. Step 5: Solve for x
    x = 8,231,683.32/2,584.80
  6. Step 6: Final answer
    x = 3,184.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.