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Finding the Fourth Proportional to 1,673.42, 2,505.42 and 1,261.26

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Solution

The fourth proportional to 1,673.42, 2,505.42 and 1,261.26 is: 1,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.42 : 2,505.42 = 1,261.26 : x
  2. Step 2: Convert to fraction form
    1,673.42/2,505.42 = 1,261.26/x
  3. Step 3: Cross multiply
    1,673.42x = 2,505.42 × 1,261.26
  4. Step 4: Simplify right side
    1,673.42x = 3,159,986.03
  5. Step 5: Solve for x
    x = 3,159,986.03/1,673.42
  6. Step 6: Final answer
    x = 1,888.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.