Home / 2,635.87-3,953.78-1,075.86

Finding the Fourth Proportional to 2,635.87, 3,953.78 and 1,075.86

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Solution

The fourth proportional to 2,635.87, 3,953.78 and 1,075.86 is: 1,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.87 : 3,953.78 = 1,075.86 : x
  2. Step 2: Convert to fraction form
    2,635.87/3,953.78 = 1,075.86/x
  3. Step 3: Cross multiply
    2,635.87x = 3,953.78 × 1,075.86
  4. Step 4: Simplify right side
    2,635.87x = 4,253,713.75
  5. Step 5: Solve for x
    x = 4,253,713.75/2,635.87
  6. Step 6: Final answer
    x = 1,613.78

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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.