Home / 3,973.80-5,485.04-2,928.88

Finding the Fourth Proportional to 3,973.80, 5,485.04 and 2,928.88

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Solution

The fourth proportional to 3,973.80, 5,485.04 and 2,928.88 is: 4,042.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,973.80 : 5,485.04 = 2,928.88 : x
  2. Step 2: Convert to fraction form
    3,973.80/5,485.04 = 2,928.88/x
  3. Step 3: Cross multiply
    3,973.80x = 5,485.04 × 2,928.88
  4. Step 4: Simplify right side
    3,973.80x = 16,065,023.96
  5. Step 5: Solve for x
    x = 16,065,023.96/3,973.80
  6. Step 6: Final answer
    x = 4,042.74

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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.