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Finding the Fourth Proportional to 1,608.63, 2,220.95 and 1,440.29

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Solution

The fourth proportional to 1,608.63, 2,220.95 and 1,440.29 is: 1,988.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.63 : 2,220.95 = 1,440.29 : x
  2. Step 2: Convert to fraction form
    1,608.63/2,220.95 = 1,440.29/x
  3. Step 3: Cross multiply
    1,608.63x = 2,220.95 × 1,440.29
  4. Step 4: Simplify right side
    1,608.63x = 3,198,812.08
  5. Step 5: Solve for x
    x = 3,198,812.08/1,608.63
  6. Step 6: Final answer
    x = 1,988.53

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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.