Home / 2,011.20-2,776.76-1,639.07

Finding the Fourth Proportional to 2,011.20, 2,776.76 and 1,639.07

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Solution

The fourth proportional to 2,011.20, 2,776.76 and 1,639.07 is: 2,262.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.20 : 2,776.76 = 1,639.07 : x
  2. Step 2: Convert to fraction form
    2,011.20/2,776.76 = 1,639.07/x
  3. Step 3: Cross multiply
    2,011.20x = 2,776.76 × 1,639.07
  4. Step 4: Simplify right side
    2,011.20x = 4,551,292.35
  5. Step 5: Solve for x
    x = 4,551,292.35/2,011.20
  6. Step 6: Final answer
    x = 2,262.97

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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.