Home / 7,943.70-11,907.80-3,782.59

Finding the Fourth Proportional to 7,943.70, 11,907.80 and 3,782.59

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Solution

The fourth proportional to 7,943.70, 11,907.80 and 3,782.59 is: 5,670.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.70 : 11,907.80 = 3,782.59 : x
  2. Step 2: Convert to fraction form
    7,943.70/11,907.80 = 3,782.59/x
  3. Step 3: Cross multiply
    7,943.70x = 11,907.80 × 3,782.59
  4. Step 4: Simplify right side
    7,943.70x = 45,042,246.75
  5. Step 5: Solve for x
    x = 45,042,246.75/7,943.70
  6. Step 6: Final answer
    x = 5,670.19

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1.5x scale

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.