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Finding the Fourth Proportional to 2,295.90, 3,169.80 and 1,855.80

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Solution

The fourth proportional to 2,295.90, 3,169.80 and 1,855.80 is: 2,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,295.90 : 3,169.80 = 1,855.80 : x
  2. Step 2: Convert to fraction form
    2,295.90/3,169.80 = 1,855.80/x
  3. Step 3: Cross multiply
    2,295.90x = 3,169.80 × 1,855.80
  4. Step 4: Simplify right side
    2,295.90x = 5,882,514.84
  5. Step 5: Solve for x
    x = 5,882,514.84/2,295.90
  6. Step 6: Final answer
    x = 2,562.18

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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.