Home / 1,858.20-2,787.68-541.95

Finding the Fourth Proportional to 1,858.20, 2,787.68 and 541.95

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Solution

The fourth proportional to 1,858.20, 2,787.68 and 541.95 is: 813.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.20 : 2,787.68 = 541.95 : x
  2. Step 2: Convert to fraction form
    1,858.20/2,787.68 = 541.95/x
  3. Step 3: Cross multiply
    1,858.20x = 2,787.68 × 541.95
  4. Step 4: Simplify right side
    1,858.20x = 1,510,780.47
  5. Step 5: Solve for x
    x = 1,510,780.47/1,858.20
  6. Step 6: Final answer
    x = 813.03

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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.