Home / 2,485.18-3,428.13-1,540.54

Finding the Fourth Proportional to 2,485.18, 3,428.13 and 1,540.54

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Solution

The fourth proportional to 2,485.18, 3,428.13 and 1,540.54 is: 2,125.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.18 : 3,428.13 = 1,540.54 : x
  2. Step 2: Convert to fraction form
    2,485.18/3,428.13 = 1,540.54/x
  3. Step 3: Cross multiply
    2,485.18x = 3,428.13 × 1,540.54
  4. Step 4: Simplify right side
    2,485.18x = 5,281,171.39
  5. Step 5: Solve for x
    x = 5,281,171.39/2,485.18
  6. Step 6: Final answer
    x = 2,125.07

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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.