Home / 3,455.48-5,180.69-1,605.65

Finding the Fourth Proportional to 3,455.48, 5,180.69 and 1,605.65

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Solution

The fourth proportional to 3,455.48, 5,180.69 and 1,605.65 is: 2,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.48 : 5,180.69 = 1,605.65 : x
  2. Step 2: Convert to fraction form
    3,455.48/5,180.69 = 1,605.65/x
  3. Step 3: Cross multiply
    3,455.48x = 5,180.69 × 1,605.65
  4. Step 4: Simplify right side
    3,455.48x = 8,318,353.01
  5. Step 5: Solve for x
    x = 8,318,353.01/3,455.48
  6. Step 6: Final answer
    x = 2,407.29

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1.5x scale

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.