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Finding the Fourth Proportional to 2,778.65, 3,832.05 and 1,659.18

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Solution

The fourth proportional to 2,778.65, 3,832.05 and 1,659.18 is: 2,288.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.65 : 3,832.05 = 1,659.18 : x
  2. Step 2: Convert to fraction form
    2,778.65/3,832.05 = 1,659.18/x
  3. Step 3: Cross multiply
    2,778.65x = 3,832.05 × 1,659.18
  4. Step 4: Simplify right side
    2,778.65x = 6,358,060.72
  5. Step 5: Solve for x
    x = 6,358,060.72/2,778.65
  6. Step 6: Final answer
    x = 2,288.19

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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.