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Finding the Fourth Proportional to 2,577.12, 3,866.16 and 845.84

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Solution

The fourth proportional to 2,577.12, 3,866.16 and 845.84 is: 1,268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.12 : 3,866.16 = 845.84 : x
  2. Step 2: Convert to fraction form
    2,577.12/3,866.16 = 845.84/x
  3. Step 3: Cross multiply
    2,577.12x = 3,866.16 × 845.84
  4. Step 4: Simplify right side
    2,577.12x = 3,270,152.77
  5. Step 5: Solve for x
    x = 3,270,152.77/2,577.12
  6. Step 6: Final answer
    x = 1,268.92

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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.