Home / 1,191.13-1,787.85-575.27

Finding the Fourth Proportional to 1,191.13, 1,787.85 and 575.27

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Solution

The fourth proportional to 1,191.13, 1,787.85 and 575.27 is: 863.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.13 : 1,787.85 = 575.27 : x
  2. Step 2: Convert to fraction form
    1,191.13/1,787.85 = 575.27/x
  3. Step 3: Cross multiply
    1,191.13x = 1,787.85 × 575.27
  4. Step 4: Simplify right side
    1,191.13x = 1,028,492.08
  5. Step 5: Solve for x
    x = 1,028,492.08/1,191.13
  6. Step 6: Final answer
    x = 863.46

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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.