Home / 2,485.65-3,428.01-2,040.96

Finding the Fourth Proportional to 2,485.65, 3,428.01 and 2,040.96

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Solution

The fourth proportional to 2,485.65, 3,428.01 and 2,040.96 is: 2,814.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.65 : 3,428.01 = 2,040.96 : x
  2. Step 2: Convert to fraction form
    2,485.65/3,428.01 = 2,040.96/x
  3. Step 3: Cross multiply
    2,485.65x = 3,428.01 × 2,040.96
  4. Step 4: Simplify right side
    2,485.65x = 6,996,431.29
  5. Step 5: Solve for x
    x = 6,996,431.29/2,485.65
  6. Step 6: Final answer
    x = 2,814.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.