Home / 3,926.61-5,423.45-3,409.11

Finding the Fourth Proportional to 3,926.61, 5,423.45 and 3,409.11

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Solution

The fourth proportional to 3,926.61, 5,423.45 and 3,409.11 is: 4,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.61 : 5,423.45 = 3,409.11 : x
  2. Step 2: Convert to fraction form
    3,926.61/5,423.45 = 3,409.11/x
  3. Step 3: Cross multiply
    3,926.61x = 5,423.45 × 3,409.11
  4. Step 4: Simplify right side
    3,926.61x = 18,489,120.58
  5. Step 5: Solve for x
    x = 18,489,120.58/3,926.61
  6. Step 6: Final answer
    x = 4,708.67

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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.