Home / 5,140.40-7,093.74-2,782.53

Finding the Fourth Proportional to 5,140.40, 7,093.74 and 2,782.53

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Solution

The fourth proportional to 5,140.40, 7,093.74 and 2,782.53 is: 3,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.40 : 7,093.74 = 2,782.53 : x
  2. Step 2: Convert to fraction form
    5,140.40/7,093.74 = 2,782.53/x
  3. Step 3: Cross multiply
    5,140.40x = 7,093.74 × 2,782.53
  4. Step 4: Simplify right side
    5,140.40x = 19,738,544.36
  5. Step 5: Solve for x
    x = 19,738,544.36/5,140.40
  6. Step 6: Final answer
    x = 3,839.89

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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.