Home / 4,212.45-6,318.67-1,439.15

Finding the Fourth Proportional to 4,212.45, 6,318.67 and 1,439.15

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Solution

The fourth proportional to 4,212.45, 6,318.67 and 1,439.15 is: 2,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.45 : 6,318.67 = 1,439.15 : x
  2. Step 2: Convert to fraction form
    4,212.45/6,318.67 = 1,439.15/x
  3. Step 3: Cross multiply
    4,212.45x = 6,318.67 × 1,439.15
  4. Step 4: Simplify right side
    4,212.45x = 9,093,484.14
  5. Step 5: Solve for x
    x = 9,093,484.14/4,212.45
  6. Step 6: Final answer
    x = 2,158.72

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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.