Home / 2,904.09-4,005.21-2,379.21

Finding the Fourth Proportional to 2,904.09, 4,005.21 and 2,379.21

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Solution

The fourth proportional to 2,904.09, 4,005.21 and 2,379.21 is: 3,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,904.09 : 4,005.21 = 2,379.21 : x
  2. Step 2: Convert to fraction form
    2,904.09/4,005.21 = 2,379.21/x
  3. Step 3: Cross multiply
    2,904.09x = 4,005.21 × 2,379.21
  4. Step 4: Simplify right side
    2,904.09x = 9,529,235.68
  5. Step 5: Solve for x
    x = 9,529,235.68/2,904.09
  6. Step 6: Final answer
    x = 3,281.32

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1.5x scale

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.