Home / 3,840.52-5,291.92-2,999.92

Finding the Fourth Proportional to 3,840.52, 5,291.92 and 2,999.92

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Solution

The fourth proportional to 3,840.52, 5,291.92 and 2,999.92 is: 4,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.52 : 5,291.92 = 2,999.92 : x
  2. Step 2: Convert to fraction form
    3,840.52/5,291.92 = 2,999.92/x
  3. Step 3: Cross multiply
    3,840.52x = 5,291.92 × 2,999.92
  4. Step 4: Simplify right side
    3,840.52x = 15,875,336.65
  5. Step 5: Solve for x
    x = 15,875,336.65/3,840.52
  6. Step 6: Final answer
    x = 4,133.64

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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.