Home / 7,681.28-11,524.26-3,986.16

Finding the Fourth Proportional to 7,681.28, 11,524.26 and 3,986.16

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Solution

The fourth proportional to 7,681.28, 11,524.26 and 3,986.16 is: 5,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.28 : 11,524.26 = 3,986.16 : x
  2. Step 2: Convert to fraction form
    7,681.28/11,524.26 = 3,986.16/x
  3. Step 3: Cross multiply
    7,681.28x = 11,524.26 × 3,986.16
  4. Step 4: Simplify right side
    7,681.28x = 45,937,544.24
  5. Step 5: Solve for x
    x = 45,937,544.24/7,681.28
  6. Step 6: Final answer
    x = 5,980.45

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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.