Home / 4,427.15-6,640.70-1,139.96

Finding the Fourth Proportional to 4,427.15, 6,640.70 and 1,139.96

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Solution

The fourth proportional to 4,427.15, 6,640.70 and 1,139.96 is: 1,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,427.15 : 6,640.70 = 1,139.96 : x
  2. Step 2: Convert to fraction form
    4,427.15/6,640.70 = 1,139.96/x
  3. Step 3: Cross multiply
    4,427.15x = 6,640.70 × 1,139.96
  4. Step 4: Simplify right side
    4,427.15x = 7,570,093.47
  5. Step 5: Solve for x
    x = 7,570,093.47/4,427.15
  6. Step 6: Final answer
    x = 1,709.93

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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.