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Finding the Fourth Proportional to 2,860.83, 3,949.16 and 1,866.96

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Solution

The fourth proportional to 2,860.83, 3,949.16 and 1,866.96 is: 2,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.83 : 3,949.16 = 1,866.96 : x
  2. Step 2: Convert to fraction form
    2,860.83/3,949.16 = 1,866.96/x
  3. Step 3: Cross multiply
    2,860.83x = 3,949.16 × 1,866.96
  4. Step 4: Simplify right side
    2,860.83x = 7,372,914.42
  5. Step 5: Solve for x
    x = 7,372,914.42/2,860.83
  6. Step 6: Final answer
    x = 2,577.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.