Home / 2,161.96-2,984.10-1,277.80

Finding the Fourth Proportional to 2,161.96, 2,984.10 and 1,277.80

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Solution

The fourth proportional to 2,161.96, 2,984.10 and 1,277.80 is: 1,763.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.96 : 2,984.10 = 1,277.80 : x
  2. Step 2: Convert to fraction form
    2,161.96/2,984.10 = 1,277.80/x
  3. Step 3: Cross multiply
    2,161.96x = 2,984.10 × 1,277.80
  4. Step 4: Simplify right side
    2,161.96x = 3,813,082.98
  5. Step 5: Solve for x
    x = 3,813,082.98/2,161.96
  6. Step 6: Final answer
    x = 1,763.72

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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.