Home / 5,140.85-7,094.39-2,782.99

Finding the Fourth Proportional to 5,140.85, 7,094.39 and 2,782.99

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Solution

The fourth proportional to 5,140.85, 7,094.39 and 2,782.99 is: 3,840.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.85 : 7,094.39 = 2,782.99 : x
  2. Step 2: Convert to fraction form
    5,140.85/7,094.39 = 2,782.99/x
  3. Step 3: Cross multiply
    5,140.85x = 7,094.39 × 2,782.99
  4. Step 4: Simplify right side
    5,140.85x = 19,743,611.38
  5. Step 5: Solve for x
    x = 19,743,611.38/5,140.85
  6. Step 6: Final answer
    x = 3,840.53

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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.