Home / 2,190.23-3,285.24-546.78

Finding the Fourth Proportional to 2,190.23, 3,285.24 and 546.78

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Solution

The fourth proportional to 2,190.23, 3,285.24 and 546.78 is: 820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.23 : 3,285.24 = 546.78 : x
  2. Step 2: Convert to fraction form
    2,190.23/3,285.24 = 546.78/x
  3. Step 3: Cross multiply
    2,190.23x = 3,285.24 × 546.78
  4. Step 4: Simplify right side
    2,190.23x = 1,796,303.53
  5. Step 5: Solve for x
    x = 1,796,303.53/2,190.23
  6. Step 6: Final answer
    x = 820.14

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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.