Home / 1,858.96-2,787.99-542.37

Finding the Fourth Proportional to 1,858.96, 2,787.99 and 542.37

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Solution

The fourth proportional to 1,858.96, 2,787.99 and 542.37 is: 813.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.96 : 2,787.99 = 542.37 : x
  2. Step 2: Convert to fraction form
    1,858.96/2,787.99 = 542.37/x
  3. Step 3: Cross multiply
    1,858.96x = 2,787.99 × 542.37
  4. Step 4: Simplify right side
    1,858.96x = 1,512,115.17
  5. Step 5: Solve for x
    x = 1,512,115.17/1,858.96
  6. Step 6: Final answer
    x = 813.42

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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.