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Finding the Fourth Proportional to 1,891.51, 2,608.81 and 1,612.67

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Solution

The fourth proportional to 1,891.51, 2,608.81 and 1,612.67 is: 2,224.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.51 : 2,608.81 = 1,612.67 : x
  2. Step 2: Convert to fraction form
    1,891.51/2,608.81 = 1,612.67/x
  3. Step 3: Cross multiply
    1,891.51x = 2,608.81 × 1,612.67
  4. Step 4: Simplify right side
    1,891.51x = 4,207,140.70
  5. Step 5: Solve for x
    x = 4,207,140.70/1,891.51
  6. Step 6: Final answer
    x = 2,224.22

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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.