Home / 3,106.44-4,289.22-1,913.07

Finding the Fourth Proportional to 3,106.44, 4,289.22 and 1,913.07

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Solution

The fourth proportional to 3,106.44, 4,289.22 and 1,913.07 is: 2,641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.44 : 4,289.22 = 1,913.07 : x
  2. Step 2: Convert to fraction form
    3,106.44/4,289.22 = 1,913.07/x
  3. Step 3: Cross multiply
    3,106.44x = 4,289.22 × 1,913.07
  4. Step 4: Simplify right side
    3,106.44x = 8,205,561.99
  5. Step 5: Solve for x
    x = 8,205,561.99/3,106.44
  6. Step 6: Final answer
    x = 2,641.47

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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.