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Finding the Fourth Proportional to 1,681.54, 2,322 and 1,626.46

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Solution

The fourth proportional to 1,681.54, 2,322 and 1,626.46 is: 2,245.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.54 : 2,322 = 1,626.46 : x
  2. Step 2: Convert to fraction form
    1,681.54/2,322 = 1,626.46/x
  3. Step 3: Cross multiply
    1,681.54x = 2,322 × 1,626.46
  4. Step 4: Simplify right side
    1,681.54x = 3,776,640.12
  5. Step 5: Solve for x
    x = 3,776,640.12/1,681.54
  6. Step 6: Final answer
    x = 2,245.94

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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.