Home / 4,685.80-7,028.78-1,398.93

Finding the Fourth Proportional to 4,685.80, 7,028.78 and 1,398.93

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Solution

The fourth proportional to 4,685.80, 7,028.78 and 1,398.93 is: 2,098.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.80 : 7,028.78 = 1,398.93 : x
  2. Step 2: Convert to fraction form
    4,685.80/7,028.78 = 1,398.93/x
  3. Step 3: Cross multiply
    4,685.80x = 7,028.78 × 1,398.93
  4. Step 4: Simplify right side
    4,685.80x = 9,832,771.21
  5. Step 5: Solve for x
    x = 9,832,771.21/4,685.80
  6. Step 6: Final answer
    x = 2,098.42

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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.