Home / 3,113.81-4,297.06-1,787.60

Finding the Fourth Proportional to 3,113.81, 4,297.06 and 1,787.60

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Solution

The fourth proportional to 3,113.81, 4,297.06 and 1,787.60 is: 2,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.81 : 4,297.06 = 1,787.60 : x
  2. Step 2: Convert to fraction form
    3,113.81/4,297.06 = 1,787.60/x
  3. Step 3: Cross multiply
    3,113.81x = 4,297.06 × 1,787.60
  4. Step 4: Simplify right side
    3,113.81x = 7,681,437.43
  5. Step 5: Solve for x
    x = 7,681,437.43/3,113.81
  6. Step 6: Final answer
    x = 2,466.89

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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.