Home / 3,782.24-5,218.48-2,290.40

Finding the Fourth Proportional to 3,782.24, 5,218.48 and 2,290.40

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Solution

The fourth proportional to 3,782.24, 5,218.48 and 2,290.40 is: 3,160.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.24 : 5,218.48 = 2,290.40 : x
  2. Step 2: Convert to fraction form
    3,782.24/5,218.48 = 2,290.40/x
  3. Step 3: Cross multiply
    3,782.24x = 5,218.48 × 2,290.40
  4. Step 4: Simplify right side
    3,782.24x = 11,952,406.59
  5. Step 5: Solve for x
    x = 11,952,406.59/3,782.24
  6. Step 6: Final answer
    x = 3,160.14

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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.