Home / 1,916.20-2,642.94-1,418.86

Finding the Fourth Proportional to 1,916.20, 2,642.94 and 1,418.86

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Solution

The fourth proportional to 1,916.20, 2,642.94 and 1,418.86 is: 1,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.20 : 2,642.94 = 1,418.86 : x
  2. Step 2: Convert to fraction form
    1,916.20/2,642.94 = 1,418.86/x
  3. Step 3: Cross multiply
    1,916.20x = 2,642.94 × 1,418.86
  4. Step 4: Simplify right side
    1,916.20x = 3,749,961.85
  5. Step 5: Solve for x
    x = 3,749,961.85/1,916.20
  6. Step 6: Final answer
    x = 1,956.98

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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.