Home / 2,830.79-3,906.63-1,769.19

Finding the Fourth Proportional to 2,830.79, 3,906.63 and 1,769.19

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Solution

The fourth proportional to 2,830.79, 3,906.63 and 1,769.19 is: 2,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.79 : 3,906.63 = 1,769.19 : x
  2. Step 2: Convert to fraction form
    2,830.79/3,906.63 = 1,769.19/x
  3. Step 3: Cross multiply
    2,830.79x = 3,906.63 × 1,769.19
  4. Step 4: Simplify right side
    2,830.79x = 6,911,570.73
  5. Step 5: Solve for x
    x = 6,911,570.73/2,830.79
  6. Step 6: Final answer
    x = 2,441.57

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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.