Home / 4,213.15-6,318.91-1,290.67

Finding the Fourth Proportional to 4,213.15, 6,318.91 and 1,290.67

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Solution

The fourth proportional to 4,213.15, 6,318.91 and 1,290.67 is: 1,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.15 : 6,318.91 = 1,290.67 : x
  2. Step 2: Convert to fraction form
    4,213.15/6,318.91 = 1,290.67/x
  3. Step 3: Cross multiply
    4,213.15x = 6,318.91 × 1,290.67
  4. Step 4: Simplify right side
    4,213.15x = 8,155,613.39
  5. Step 5: Solve for x
    x = 8,155,613.39/4,213.15
  6. Step 6: Final answer
    x = 1,935.75

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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.