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Finding the Fourth Proportional to 2,213.60, 3,315.60 and 1,925.60

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Solution

The fourth proportional to 2,213.60, 3,315.60 and 1,925.60 is: 2,884.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.60 : 3,315.60 = 1,925.60 : x
  2. Step 2: Convert to fraction form
    2,213.60/3,315.60 = 1,925.60/x
  3. Step 3: Cross multiply
    2,213.60x = 3,315.60 × 1,925.60
  4. Step 4: Simplify right side
    2,213.60x = 6,384,519.36
  5. Step 5: Solve for x
    x = 6,384,519.36/2,213.60
  6. Step 6: Final answer
    x = 2,884.22

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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.