Home / 2,820-4,229.28-1,666.56

Finding the Fourth Proportional to 2,820, 4,229.28 and 1,666.56

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Solution

The fourth proportional to 2,820, 4,229.28 and 1,666.56 is: 2,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820 : 4,229.28 = 1,666.56 : x
  2. Step 2: Convert to fraction form
    2,820/4,229.28 = 1,666.56/x
  3. Step 3: Cross multiply
    2,820x = 4,229.28 × 1,666.56
  4. Step 4: Simplify right side
    2,820x = 7,048,348.88
  5. Step 5: Solve for x
    x = 7,048,348.88/2,820
  6. Step 6: Final answer
    x = 2,499.41

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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.