Home / 2,115.40-3,173.55-1,075.54

Finding the Fourth Proportional to 2,115.40, 3,173.55 and 1,075.54

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Solution

The fourth proportional to 2,115.40, 3,173.55 and 1,075.54 is: 1,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.40 : 3,173.55 = 1,075.54 : x
  2. Step 2: Convert to fraction form
    2,115.40/3,173.55 = 1,075.54/x
  3. Step 3: Cross multiply
    2,115.40x = 3,173.55 × 1,075.54
  4. Step 4: Simplify right side
    2,115.40x = 3,413,279.97
  5. Step 5: Solve for x
    x = 3,413,279.97/2,115.40
  6. Step 6: Final answer
    x = 1,613.54

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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.