Home / 7,119.16-9,823.84-3,975.28

Finding the Fourth Proportional to 7,119.16, 9,823.84 and 3,975.28

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Solution

The fourth proportional to 7,119.16, 9,823.84 and 3,975.28 is: 5,485.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.16 : 9,823.84 = 3,975.28 : x
  2. Step 2: Convert to fraction form
    7,119.16/9,823.84 = 3,975.28/x
  3. Step 3: Cross multiply
    7,119.16x = 9,823.84 × 3,975.28
  4. Step 4: Simplify right side
    7,119.16x = 39,052,514.68
  5. Step 5: Solve for x
    x = 39,052,514.68/7,119.16
  6. Step 6: Final answer
    x = 5,485.55

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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.