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Finding the Fourth Proportional to 2,075, 2,863.50 and 1,190.77

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Solution

The fourth proportional to 2,075, 2,863.50 and 1,190.77 is: 1,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075 : 2,863.50 = 1,190.77 : x
  2. Step 2: Convert to fraction form
    2,075/2,863.50 = 1,190.77/x
  3. Step 3: Cross multiply
    2,075x = 2,863.50 × 1,190.77
  4. Step 4: Simplify right side
    2,075x = 3,409,755.58
  5. Step 5: Solve for x
    x = 3,409,755.58/2,075
  6. Step 6: Final answer
    x = 1,643.26

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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.