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Finding the Fourth Proportional to 2,855.64, 3,935.63 and 2,068.32

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Solution

The fourth proportional to 2,855.64, 3,935.63 and 2,068.32 is: 2,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.64 : 3,935.63 = 2,068.32 : x
  2. Step 2: Convert to fraction form
    2,855.64/3,935.63 = 2,068.32/x
  3. Step 3: Cross multiply
    2,855.64x = 3,935.63 × 2,068.32
  4. Step 4: Simplify right side
    2,855.64x = 8,140,131.90
  5. Step 5: Solve for x
    x = 8,140,131.90/2,855.64
  6. Step 6: Final answer
    x = 2,850.55

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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.