Home / 3,491.72-4,818.66-1,919.81

Finding the Fourth Proportional to 3,491.72, 4,818.66 and 1,919.81

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Solution

The fourth proportional to 3,491.72, 4,818.66 and 1,919.81 is: 2,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.72 : 4,818.66 = 1,919.81 : x
  2. Step 2: Convert to fraction form
    3,491.72/4,818.66 = 1,919.81/x
  3. Step 3: Cross multiply
    3,491.72x = 4,818.66 × 1,919.81
  4. Step 4: Simplify right side
    3,491.72x = 9,250,916.50
  5. Step 5: Solve for x
    x = 9,250,916.50/3,491.72
  6. Step 6: Final answer
    x = 2,649.39

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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.