Home / 1,858.53-2,787.36-542.28

Finding the Fourth Proportional to 1,858.53, 2,787.36 and 542.28

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Solution

The fourth proportional to 1,858.53, 2,787.36 and 542.28 is: 813.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.53 : 2,787.36 = 542.28 : x
  2. Step 2: Convert to fraction form
    1,858.53/2,787.36 = 542.28/x
  3. Step 3: Cross multiply
    1,858.53x = 2,787.36 × 542.28
  4. Step 4: Simplify right side
    1,858.53x = 1,511,529.58
  5. Step 5: Solve for x
    x = 1,511,529.58/1,858.53
  6. Step 6: Final answer
    x = 813.29

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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.