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Finding the Fourth Proportional to 2,784.64, 3,843.20 and 1,606.40

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Solution

The fourth proportional to 2,784.64, 3,843.20 and 1,606.40 is: 2,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.64 : 3,843.20 = 1,606.40 : x
  2. Step 2: Convert to fraction form
    2,784.64/3,843.20 = 1,606.40/x
  3. Step 3: Cross multiply
    2,784.64x = 3,843.20 × 1,606.40
  4. Step 4: Simplify right side
    2,784.64x = 6,173,716.48
  5. Step 5: Solve for x
    x = 6,173,716.48/2,784.64
  6. Step 6: Final answer
    x = 2,217.06

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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.