Home / 6,782.80-9,361.40-4,131.24

Finding the Fourth Proportional to 6,782.80, 9,361.40 and 4,131.24

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Solution

The fourth proportional to 6,782.80, 9,361.40 and 4,131.24 is: 5,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,782.80 : 9,361.40 = 4,131.24 : x
  2. Step 2: Convert to fraction form
    6,782.80/9,361.40 = 4,131.24/x
  3. Step 3: Cross multiply
    6,782.80x = 9,361.40 × 4,131.24
  4. Step 4: Simplify right side
    6,782.80x = 38,674,190.14
  5. Step 5: Solve for x
    x = 38,674,190.14/6,782.80
  6. Step 6: Final answer
    x = 5,701.80

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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.