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Finding the Fourth Proportional to 3,608.64, 4,983.84 and 2,491.20

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Solution

The fourth proportional to 3,608.64, 4,983.84 and 2,491.20 is: 3,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.64 : 4,983.84 = 2,491.20 : x
  2. Step 2: Convert to fraction form
    3,608.64/4,983.84 = 2,491.20/x
  3. Step 3: Cross multiply
    3,608.64x = 4,983.84 × 2,491.20
  4. Step 4: Simplify right side
    3,608.64x = 12,415,742.21
  5. Step 5: Solve for x
    x = 12,415,742.21/3,608.64
  6. Step 6: Final answer
    x = 3,440.56

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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.