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Finding the Fourth Proportional to 1,994.45, 2,740.41 and 1,866.47

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Solution

The fourth proportional to 1,994.45, 2,740.41 and 1,866.47 is: 2,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.45 : 2,740.41 = 1,866.47 : x
  2. Step 2: Convert to fraction form
    1,994.45/2,740.41 = 1,866.47/x
  3. Step 3: Cross multiply
    1,994.45x = 2,740.41 × 1,866.47
  4. Step 4: Simplify right side
    1,994.45x = 5,114,879.35
  5. Step 5: Solve for x
    x = 5,114,879.35/1,994.45
  6. Step 6: Final answer
    x = 2,564.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.