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Finding the Fourth Proportional to 2,577.72, 3,866.74 and 1,116.99

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Solution

The fourth proportional to 2,577.72, 3,866.74 and 1,116.99 is: 1,675.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.72 : 3,866.74 = 1,116.99 : x
  2. Step 2: Convert to fraction form
    2,577.72/3,866.74 = 1,116.99/x
  3. Step 3: Cross multiply
    2,577.72x = 3,866.74 × 1,116.99
  4. Step 4: Simplify right side
    2,577.72x = 4,319,107.12
  5. Step 5: Solve for x
    x = 4,319,107.12/2,577.72
  6. Step 6: Final answer
    x = 1,675.55

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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.