Home / 5,072.20-7,608.24-1,785.28

Finding the Fourth Proportional to 5,072.20, 7,608.24 and 1,785.28

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Solution

The fourth proportional to 5,072.20, 7,608.24 and 1,785.28 is: 2,677.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.20 : 7,608.24 = 1,785.28 : x
  2. Step 2: Convert to fraction form
    5,072.20/7,608.24 = 1,785.28/x
  3. Step 3: Cross multiply
    5,072.20x = 7,608.24 × 1,785.28
  4. Step 4: Simplify right side
    5,072.20x = 13,582,838.71
  5. Step 5: Solve for x
    x = 13,582,838.71/5,072.20
  6. Step 6: Final answer
    x = 2,677.90

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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.