Home / 4,749.26-7,123.86-1,286.51

Finding the Fourth Proportional to 4,749.26, 7,123.86 and 1,286.51

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Solution

The fourth proportional to 4,749.26, 7,123.86 and 1,286.51 is: 1,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.26 : 7,123.86 = 1,286.51 : x
  2. Step 2: Convert to fraction form
    4,749.26/7,123.86 = 1,286.51/x
  3. Step 3: Cross multiply
    4,749.26x = 7,123.86 × 1,286.51
  4. Step 4: Simplify right side
    4,749.26x = 9,164,934.94
  5. Step 5: Solve for x
    x = 9,164,934.94/4,749.26
  6. Step 6: Final answer
    x = 1,929.76

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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.