Home / 4,678.34-7,018.92-1,391.54

Finding the Fourth Proportional to 4,678.34, 7,018.92 and 1,391.54

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Solution

The fourth proportional to 4,678.34, 7,018.92 and 1,391.54 is: 2,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.34 : 7,018.92 = 1,391.54 : x
  2. Step 2: Convert to fraction form
    4,678.34/7,018.92 = 1,391.54/x
  3. Step 3: Cross multiply
    4,678.34x = 7,018.92 × 1,391.54
  4. Step 4: Simplify right side
    4,678.34x = 9,767,107.94
  5. Step 5: Solve for x
    x = 9,767,107.94/4,678.34
  6. Step 6: Final answer
    x = 2,087.73

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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.