Home / 5,419.15-8,126.70-1,907.80

Finding the Fourth Proportional to 5,419.15, 8,126.70 and 1,907.80

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Solution

The fourth proportional to 5,419.15, 8,126.70 and 1,907.80 is: 2,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.15 : 8,126.70 = 1,907.80 : x
  2. Step 2: Convert to fraction form
    5,419.15/8,126.70 = 1,907.80/x
  3. Step 3: Cross multiply
    5,419.15x = 8,126.70 × 1,907.80
  4. Step 4: Simplify right side
    5,419.15x = 15,504,118.26
  5. Step 5: Solve for x
    x = 15,504,118.26/5,419.15
  6. Step 6: Final answer
    x = 2,860.99

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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.