Home / 7,078.80-10,615.47-3,379.13

Finding the Fourth Proportional to 7,078.80, 10,615.47 and 3,379.13

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Solution

The fourth proportional to 7,078.80, 10,615.47 and 3,379.13 is: 5,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.80 : 10,615.47 = 3,379.13 : x
  2. Step 2: Convert to fraction form
    7,078.80/10,615.47 = 3,379.13/x
  3. Step 3: Cross multiply
    7,078.80x = 10,615.47 × 3,379.13
  4. Step 4: Simplify right side
    7,078.80x = 35,871,053.14
  5. Step 5: Solve for x
    x = 35,871,053.14/7,078.80
  6. Step 6: Final answer
    x = 5,067.39

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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.