Home / 7,140.07-9,853.21-3,996.26

Finding the Fourth Proportional to 7,140.07, 9,853.21 and 3,996.26

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Solution

The fourth proportional to 7,140.07, 9,853.21 and 3,996.26 is: 5,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.07 : 9,853.21 = 3,996.26 : x
  2. Step 2: Convert to fraction form
    7,140.07/9,853.21 = 3,996.26/x
  3. Step 3: Cross multiply
    7,140.07x = 9,853.21 × 3,996.26
  4. Step 4: Simplify right side
    7,140.07x = 39,375,988.99
  5. Step 5: Solve for x
    x = 39,375,988.99/7,140.07
  6. Step 6: Final answer
    x = 5,514.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.