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Finding the Fourth Proportional to 3,959.39, 5,909.84 and 3,492.46

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Solution

The fourth proportional to 3,959.39, 5,909.84 and 3,492.46 is: 5,212.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.39 : 5,909.84 = 3,492.46 : x
  2. Step 2: Convert to fraction form
    3,959.39/5,909.84 = 3,492.46/x
  3. Step 3: Cross multiply
    3,959.39x = 5,909.84 × 3,492.46
  4. Step 4: Simplify right side
    3,959.39x = 20,639,879.81
  5. Step 5: Solve for x
    x = 20,639,879.81/3,959.39
  6. Step 6: Final answer
    x = 5,212.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.