Home / 1,858.20-2,787.30-1,809.48

Finding the Fourth Proportional to 1,858.20, 2,787.30 and 1,809.48

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Solution

The fourth proportional to 1,858.20, 2,787.30 and 1,809.48 is: 2,714.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.20 : 2,787.30 = 1,809.48 : x
  2. Step 2: Convert to fraction form
    1,858.20/2,787.30 = 1,809.48/x
  3. Step 3: Cross multiply
    1,858.20x = 2,787.30 × 1,809.48
  4. Step 4: Simplify right side
    1,858.20x = 5,043,563.60
  5. Step 5: Solve for x
    x = 5,043,563.60/1,858.20
  6. Step 6: Final answer
    x = 2,714.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.