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Finding the Fourth Proportional to 3,491.64, 4,818.48 and 1,919.73

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Solution

The fourth proportional to 3,491.64, 4,818.48 and 1,919.73 is: 2,649.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.64 : 4,818.48 = 1,919.73 : x
  2. Step 2: Convert to fraction form
    3,491.64/4,818.48 = 1,919.73/x
  3. Step 3: Cross multiply
    3,491.64x = 4,818.48 × 1,919.73
  4. Step 4: Simplify right side
    3,491.64x = 9,250,180.61
  5. Step 5: Solve for x
    x = 9,250,180.61/3,491.64
  6. Step 6: Final answer
    x = 2,649.24

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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.