Home / 3,113.88-4,297.56-1,787.32

Finding the Fourth Proportional to 3,113.88, 4,297.56 and 1,787.32

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Solution

The fourth proportional to 3,113.88, 4,297.56 and 1,787.32 is: 2,466.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.88 : 4,297.56 = 1,787.32 : x
  2. Step 2: Convert to fraction form
    3,113.88/4,297.56 = 1,787.32/x
  3. Step 3: Cross multiply
    3,113.88x = 4,297.56 × 1,787.32
  4. Step 4: Simplify right side
    3,113.88x = 7,681,114.94
  5. Step 5: Solve for x
    x = 7,681,114.94/3,113.88
  6. Step 6: Final answer
    x = 2,466.73

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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.