Home / 2,621.60-3,934.80-2,256.80

Finding the Fourth Proportional to 2,621.60, 3,934.80 and 2,256.80

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Solution

The fourth proportional to 2,621.60, 3,934.80 and 2,256.80 is: 3,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.60 : 3,934.80 = 2,256.80 : x
  2. Step 2: Convert to fraction form
    2,621.60/3,934.80 = 2,256.80/x
  3. Step 3: Cross multiply
    2,621.60x = 3,934.80 × 2,256.80
  4. Step 4: Simplify right side
    2,621.60x = 8,880,056.64
  5. Step 5: Solve for x
    x = 8,880,056.64/2,621.60
  6. Step 6: Final answer
    x = 3,387.27

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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.