Home / 4,066.61-5,615.11-3,120.91

Finding the Fourth Proportional to 4,066.61, 5,615.11 and 3,120.91

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Solution

The fourth proportional to 4,066.61, 5,615.11 and 3,120.91 is: 4,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,066.61 : 5,615.11 = 3,120.91 : x
  2. Step 2: Convert to fraction form
    4,066.61/5,615.11 = 3,120.91/x
  3. Step 3: Cross multiply
    4,066.61x = 5,615.11 × 3,120.91
  4. Step 4: Simplify right side
    4,066.61x = 17,524,235.46
  5. Step 5: Solve for x
    x = 17,524,235.46/4,066.61
  6. Step 6: Final answer
    x = 4,309.29

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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.