Home / 7,421.68-11,127.66-3,961.36

Finding the Fourth Proportional to 7,421.68, 11,127.66 and 3,961.36

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Solution

The fourth proportional to 7,421.68, 11,127.66 and 3,961.36 is: 5,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.68 : 11,127.66 = 3,961.36 : x
  2. Step 2: Convert to fraction form
    7,421.68/11,127.66 = 3,961.36/x
  3. Step 3: Cross multiply
    7,421.68x = 11,127.66 × 3,961.36
  4. Step 4: Simplify right side
    7,421.68x = 44,080,667.22
  5. Step 5: Solve for x
    x = 44,080,667.22/7,421.68
  6. Step 6: Final answer
    x = 5,939.45

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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.