Home / 5,198.80-7,797.38-1,688.89

Finding the Fourth Proportional to 5,198.80, 7,797.38 and 1,688.89

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Solution

The fourth proportional to 5,198.80, 7,797.38 and 1,688.89 is: 2,533.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.80 : 7,797.38 = 1,688.89 : x
  2. Step 2: Convert to fraction form
    5,198.80/7,797.38 = 1,688.89/x
  3. Step 3: Cross multiply
    5,198.80x = 7,797.38 × 1,688.89
  4. Step 4: Simplify right side
    5,198.80x = 13,168,908.66
  5. Step 5: Solve for x
    x = 13,168,908.66/5,198.80
  6. Step 6: Final answer
    x = 2,533.07

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1.5x scale

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.