Home / 4,749.81-7,124.16-1,286.79

Finding the Fourth Proportional to 4,749.81, 7,124.16 and 1,286.79

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Solution

The fourth proportional to 4,749.81, 7,124.16 and 1,286.79 is: 1,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.81 : 7,124.16 = 1,286.79 : x
  2. Step 2: Convert to fraction form
    4,749.81/7,124.16 = 1,286.79/x
  3. Step 3: Cross multiply
    4,749.81x = 7,124.16 × 1,286.79
  4. Step 4: Simplify right side
    4,749.81x = 9,167,297.85
  5. Step 5: Solve for x
    x = 9,167,297.85/4,749.81
  6. Step 6: Final answer
    x = 1,930.03

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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.