Home / 3,109.26-4,289.43-1,782.66

Finding the Fourth Proportional to 3,109.26, 4,289.43 and 1,782.66

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Solution

The fourth proportional to 3,109.26, 4,289.43 and 1,782.66 is: 2,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.26 : 4,289.43 = 1,782.66 : x
  2. Step 2: Convert to fraction form
    3,109.26/4,289.43 = 1,782.66/x
  3. Step 3: Cross multiply
    3,109.26x = 4,289.43 × 1,782.66
  4. Step 4: Simplify right side
    3,109.26x = 7,646,595.28
  5. Step 5: Solve for x
    x = 7,646,595.28/3,109.26
  6. Step 6: Final answer
    x = 2,459.30

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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.