Home / 3,113.20-4,296.84-1,787.81

Finding the Fourth Proportional to 3,113.20, 4,296.84 and 1,787.81

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Solution

The fourth proportional to 3,113.20, 4,296.84 and 1,787.81 is: 2,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.20 : 4,296.84 = 1,787.81 : x
  2. Step 2: Convert to fraction form
    3,113.20/4,296.84 = 1,787.81/x
  3. Step 3: Cross multiply
    3,113.20x = 4,296.84 × 1,787.81
  4. Step 4: Simplify right side
    3,113.20x = 7,681,933.52
  5. Step 5: Solve for x
    x = 7,681,933.52/3,113.20
  6. Step 6: Final answer
    x = 2,467.54

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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.