Home / 4,785.60-7,168.80-2,731.20

Finding the Fourth Proportional to 4,785.60, 7,168.80 and 2,731.20

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Solution

The fourth proportional to 4,785.60, 7,168.80 and 2,731.20 is: 4,091.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.60 : 7,168.80 = 2,731.20 : x
  2. Step 2: Convert to fraction form
    4,785.60/7,168.80 = 2,731.20/x
  3. Step 3: Cross multiply
    4,785.60x = 7,168.80 × 2,731.20
  4. Step 4: Simplify right side
    4,785.60x = 19,579,426.56
  5. Step 5: Solve for x
    x = 19,579,426.56/4,785.60
  6. Step 6: Final answer
    x = 4,091.32

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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.