Home / 3,491.66-4,818.56-1,919.76

Finding the Fourth Proportional to 3,491.66, 4,818.56 and 1,919.76

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Solution

The fourth proportional to 3,491.66, 4,818.56 and 1,919.76 is: 2,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.66 : 4,818.56 = 1,919.76 : x
  2. Step 2: Convert to fraction form
    3,491.66/4,818.56 = 1,919.76/x
  3. Step 3: Cross multiply
    3,491.66x = 4,818.56 × 1,919.76
  4. Step 4: Simplify right side
    3,491.66x = 9,250,469.15
  5. Step 5: Solve for x
    x = 9,250,469.15/3,491.66
  6. Step 6: Final answer
    x = 2,649.31

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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.