Home / 2,074.14-3,111.09-919.50

Finding the Fourth Proportional to 2,074.14, 3,111.09 and 919.50

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Solution

The fourth proportional to 2,074.14, 3,111.09 and 919.50 is: 1,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.14 : 3,111.09 = 919.50 : x
  2. Step 2: Convert to fraction form
    2,074.14/3,111.09 = 919.50/x
  3. Step 3: Cross multiply
    2,074.14x = 3,111.09 × 919.50
  4. Step 4: Simplify right side
    2,074.14x = 2,860,647.26
  5. Step 5: Solve for x
    x = 2,860,647.26/2,074.14
  6. Step 6: Final answer
    x = 1,379.20

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,075.14, 3,112.59 and 920.50
Similar ratio
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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.