Home / 3,113.62-4,296.89-1,787.58

Finding the Fourth Proportional to 3,113.62, 4,296.89 and 1,787.58

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Solution

The fourth proportional to 3,113.62, 4,296.89 and 1,787.58 is: 2,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.62 : 4,296.89 = 1,787.58 : x
  2. Step 2: Convert to fraction form
    3,113.62/4,296.89 = 1,787.58/x
  3. Step 3: Cross multiply
    3,113.62x = 4,296.89 × 1,787.58
  4. Step 4: Simplify right side
    3,113.62x = 7,681,039.10
  5. Step 5: Solve for x
    x = 7,681,039.10/3,113.62
  6. Step 6: Final answer
    x = 2,466.92

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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.