Home / 3,901.30-5,850.80-1,128

Finding the Fourth Proportional to 3,901.30, 5,850.80 and 1,128

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Solution

The fourth proportional to 3,901.30, 5,850.80 and 1,128 is: 1,691.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.30 : 5,850.80 = 1,128 : x
  2. Step 2: Convert to fraction form
    3,901.30/5,850.80 = 1,128/x
  3. Step 3: Cross multiply
    3,901.30x = 5,850.80 × 1,128
  4. Step 4: Simplify right side
    3,901.30x = 6,599,702.40
  5. Step 5: Solve for x
    x = 6,599,702.40/3,901.30
  6. Step 6: Final answer
    x = 1,691.67

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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.