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Finding the Fourth Proportional to 2,057.84, 2,838.86 and 1,260.92

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Solution

The fourth proportional to 2,057.84, 2,838.86 and 1,260.92 is: 1,739.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,057.84 : 2,838.86 = 1,260.92 : x
  2. Step 2: Convert to fraction form
    2,057.84/2,838.86 = 1,260.92/x
  3. Step 3: Cross multiply
    2,057.84x = 2,838.86 × 1,260.92
  4. Step 4: Simplify right side
    2,057.84x = 3,579,575.35
  5. Step 5: Solve for x
    x = 3,579,575.35/2,057.84
  6. Step 6: Final answer
    x = 1,739.48

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Half scale
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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.