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Finding the Fourth Proportional to 2,805.80, 4,211.40 and 2,395.40

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Solution

The fourth proportional to 2,805.80, 4,211.40 and 2,395.40 is: 3,595.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.80 : 4,211.40 = 2,395.40 : x
  2. Step 2: Convert to fraction form
    2,805.80/4,211.40 = 2,395.40/x
  3. Step 3: Cross multiply
    2,805.80x = 4,211.40 × 2,395.40
  4. Step 4: Simplify right side
    2,805.80x = 10,087,987.56
  5. Step 5: Solve for x
    x = 10,087,987.56/2,805.80
  6. Step 6: Final answer
    x = 3,595.41

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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.