Home / 1,190.47-1,787.35-605.87

Finding the Fourth Proportional to 1,190.47, 1,787.35 and 605.87

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Solution

The fourth proportional to 1,190.47, 1,787.35 and 605.87 is: 909.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.47 : 1,787.35 = 605.87 : x
  2. Step 2: Convert to fraction form
    1,190.47/1,787.35 = 605.87/x
  3. Step 3: Cross multiply
    1,190.47x = 1,787.35 × 605.87
  4. Step 4: Simplify right side
    1,190.47x = 1,082,896.86
  5. Step 5: Solve for x
    x = 1,082,896.86/1,190.47
  6. Step 6: Final answer
    x = 909.64

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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.