Home / 3,133.70-4,702.35-1,187.30

Finding the Fourth Proportional to 3,133.70, 4,702.35 and 1,187.30

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Solution

The fourth proportional to 3,133.70, 4,702.35 and 1,187.30 is: 1,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.70 : 4,702.35 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    3,133.70/4,702.35 = 1,187.30/x
  3. Step 3: Cross multiply
    3,133.70x = 4,702.35 × 1,187.30
  4. Step 4: Simplify right side
    3,133.70x = 5,583,100.16
  5. Step 5: Solve for x
    x = 5,583,100.16/3,133.70
  6. Step 6: Final answer
    x = 1,781.63

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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.