Home / 4,211.82-6,317.49-1,290.12

Finding the Fourth Proportional to 4,211.82, 6,317.49 and 1,290.12

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Solution

The fourth proportional to 4,211.82, 6,317.49 and 1,290.12 is: 1,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,211.82 : 6,317.49 = 1,290.12 : x
  2. Step 2: Convert to fraction form
    4,211.82/6,317.49 = 1,290.12/x
  3. Step 3: Cross multiply
    4,211.82x = 6,317.49 × 1,290.12
  4. Step 4: Simplify right side
    4,211.82x = 8,150,320.20
  5. Step 5: Solve for x
    x = 8,150,320.20/4,211.82
  6. Step 6: Final answer
    x = 1,935.11

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Double scale
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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.