Home / 3,491.78-4,818.35-1,919.93

Finding the Fourth Proportional to 3,491.78, 4,818.35 and 1,919.93

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Solution

The fourth proportional to 3,491.78, 4,818.35 and 1,919.93 is: 2,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.78 : 4,818.35 = 1,919.93 : x
  2. Step 2: Convert to fraction form
    3,491.78/4,818.35 = 1,919.93/x
  3. Step 3: Cross multiply
    3,491.78x = 4,818.35 × 1,919.93
  4. Step 4: Simplify right side
    3,491.78x = 9,250,875.42
  5. Step 5: Solve for x
    x = 9,250,875.42/3,491.78
  6. Step 6: Final answer
    x = 2,649.33

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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.