Home / 7,131.03-9,839.30-4,145.28

Finding the Fourth Proportional to 7,131.03, 9,839.30 and 4,145.28

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Solution

The fourth proportional to 7,131.03, 9,839.30 and 4,145.28 is: 5,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.03 : 9,839.30 = 4,145.28 : x
  2. Step 2: Convert to fraction form
    7,131.03/9,839.30 = 4,145.28/x
  3. Step 3: Cross multiply
    7,131.03x = 9,839.30 × 4,145.28
  4. Step 4: Simplify right side
    7,131.03x = 40,786,632.78
  5. Step 5: Solve for x
    x = 40,786,632.78/7,131.03
  6. Step 6: Final answer
    x = 5,719.60

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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.