Home / 4,518.50-6,778.37-1,398.09

Finding the Fourth Proportional to 4,518.50, 6,778.37 and 1,398.09

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Solution

The fourth proportional to 4,518.50, 6,778.37 and 1,398.09 is: 2,097.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,518.50 : 6,778.37 = 1,398.09 : x
  2. Step 2: Convert to fraction form
    4,518.50/6,778.37 = 1,398.09/x
  3. Step 3: Cross multiply
    4,518.50x = 6,778.37 × 1,398.09
  4. Step 4: Simplify right side
    4,518.50x = 9,476,800.23
  5. Step 5: Solve for x
    x = 9,476,800.23/4,518.50
  6. Step 6: Final answer
    x = 2,097.34

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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.