Home / 2,161.79-2,983.43-1,277.57

Finding the Fourth Proportional to 2,161.79, 2,983.43 and 1,277.57

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Solution

The fourth proportional to 2,161.79, 2,983.43 and 1,277.57 is: 1,763.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.79 : 2,983.43 = 1,277.57 : x
  2. Step 2: Convert to fraction form
    2,161.79/2,983.43 = 1,277.57/x
  3. Step 3: Cross multiply
    2,161.79x = 2,983.43 × 1,277.57
  4. Step 4: Simplify right side
    2,161.79x = 3,811,551.32
  5. Step 5: Solve for x
    x = 3,811,551.32/2,161.79
  6. Step 6: Final answer
    x = 1,763.15

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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.