Home / 2,403.12-3,311.64-1,605.54

Finding the Fourth Proportional to 2,403.12, 3,311.64 and 1,605.54

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Solution

The fourth proportional to 2,403.12, 3,311.64 and 1,605.54 is: 2,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,403.12 : 3,311.64 = 1,605.54 : x
  2. Step 2: Convert to fraction form
    2,403.12/3,311.64 = 1,605.54/x
  3. Step 3: Cross multiply
    2,403.12x = 3,311.64 × 1,605.54
  4. Step 4: Simplify right side
    2,403.12x = 5,316,970.49
  5. Step 5: Solve for x
    x = 5,316,970.49/2,403.12
  6. Step 6: Final answer
    x = 2,212.53

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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.