Home / 2,075.68-3,115.47-1,382.84

Finding the Fourth Proportional to 2,075.68, 3,115.47 and 1,382.84

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Solution

The fourth proportional to 2,075.68, 3,115.47 and 1,382.84 is: 2,075.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,075.68 : 3,115.47 = 1,382.84 : x
  2. Step 2: Convert to fraction form
    2,075.68/3,115.47 = 1,382.84/x
  3. Step 3: Cross multiply
    2,075.68x = 3,115.47 × 1,382.84
  4. Step 4: Simplify right side
    2,075.68x = 4,308,197.83
  5. Step 5: Solve for x
    x = 4,308,197.83/2,075.68
  6. Step 6: Final answer
    x = 2,075.56

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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.