Home / 2,856.06-3,939.75-1,676.91

Finding the Fourth Proportional to 2,856.06, 3,939.75 and 1,676.91

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Solution

The fourth proportional to 2,856.06, 3,939.75 and 1,676.91 is: 2,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.06 : 3,939.75 = 1,676.91 : x
  2. Step 2: Convert to fraction form
    2,856.06/3,939.75 = 1,676.91/x
  3. Step 3: Cross multiply
    2,856.06x = 3,939.75 × 1,676.91
  4. Step 4: Simplify right side
    2,856.06x = 6,606,606.17
  5. Step 5: Solve for x
    x = 6,606,606.17/2,856.06
  6. Step 6: Final answer
    x = 2,313.19

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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.