Home / 4,939.50-7,407.32-1,428.26

Finding the Fourth Proportional to 4,939.50, 7,407.32 and 1,428.26

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Solution

The fourth proportional to 4,939.50, 7,407.32 and 1,428.26 is: 2,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.50 : 7,407.32 = 1,428.26 : x
  2. Step 2: Convert to fraction form
    4,939.50/7,407.32 = 1,428.26/x
  3. Step 3: Cross multiply
    4,939.50x = 7,407.32 × 1,428.26
  4. Step 4: Simplify right side
    4,939.50x = 10,579,578.86
  5. Step 5: Solve for x
    x = 10,579,578.86/4,939.50
  6. Step 6: Final answer
    x = 2,141.83

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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.