Home / 3,620.07-5,428.98-1,540.05

Finding the Fourth Proportional to 3,620.07, 5,428.98 and 1,540.05

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Solution

The fourth proportional to 3,620.07, 5,428.98 and 1,540.05 is: 2,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.07 : 5,428.98 = 1,540.05 : x
  2. Step 2: Convert to fraction form
    3,620.07/5,428.98 = 1,540.05/x
  3. Step 3: Cross multiply
    3,620.07x = 5,428.98 × 1,540.05
  4. Step 4: Simplify right side
    3,620.07x = 8,360,900.65
  5. Step 5: Solve for x
    x = 8,360,900.65/3,620.07
  6. Step 6: Final answer
    x = 2,309.60

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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.