Home / 3,113.40-4,296.46-1,787.31

Finding the Fourth Proportional to 3,113.40, 4,296.46 and 1,787.31

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Solution

The fourth proportional to 3,113.40, 4,296.46 and 1,787.31 is: 2,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.40 : 4,296.46 = 1,787.31 : x
  2. Step 2: Convert to fraction form
    3,113.40/4,296.46 = 1,787.31/x
  3. Step 3: Cross multiply
    3,113.40x = 4,296.46 × 1,787.31
  4. Step 4: Simplify right side
    3,113.40x = 7,679,105.92
  5. Step 5: Solve for x
    x = 7,679,105.92/3,113.40
  6. Step 6: Final answer
    x = 2,466.47

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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.