Home / 3,491.86-4,818.84-1,920.04

Finding the Fourth Proportional to 3,491.86, 4,818.84 and 1,920.04

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Solution

The fourth proportional to 3,491.86, 4,818.84 and 1,920.04 is: 2,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.86 : 4,818.84 = 1,920.04 : x
  2. Step 2: Convert to fraction form
    3,491.86/4,818.84 = 1,920.04/x
  3. Step 3: Cross multiply
    3,491.86x = 4,818.84 × 1,920.04
  4. Step 4: Simplify right side
    3,491.86x = 9,252,365.55
  5. Step 5: Solve for x
    x = 9,252,365.55/3,491.86
  6. Step 6: Final answer
    x = 2,649.70

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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.