Home / 4,920.36-7,379.92-2,148.94

Finding the Fourth Proportional to 4,920.36, 7,379.92 and 2,148.94

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Solution

The fourth proportional to 4,920.36, 7,379.92 and 2,148.94 is: 3,223.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.36 : 7,379.92 = 2,148.94 : x
  2. Step 2: Convert to fraction form
    4,920.36/7,379.92 = 2,148.94/x
  3. Step 3: Cross multiply
    4,920.36x = 7,379.92 × 2,148.94
  4. Step 4: Simplify right side
    4,920.36x = 15,859,005.28
  5. Step 5: Solve for x
    x = 15,859,005.28/4,920.36
  6. Step 6: Final answer
    x = 3,223.14

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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.