Home / 3,477.90-5,217.63-1,286.70

Finding the Fourth Proportional to 3,477.90, 5,217.63 and 1,286.70

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Solution

The fourth proportional to 3,477.90, 5,217.63 and 1,286.70 is: 1,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,477.90 : 5,217.63 = 1,286.70 : x
  2. Step 2: Convert to fraction form
    3,477.90/5,217.63 = 1,286.70/x
  3. Step 3: Cross multiply
    3,477.90x = 5,217.63 × 1,286.70
  4. Step 4: Simplify right side
    3,477.90x = 6,713,524.52
  5. Step 5: Solve for x
    x = 6,713,524.52/3,477.90
  6. Step 6: Final answer
    x = 1,930.34

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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.