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Finding the Fourth Proportional to 1,697.44, 2,344.16 and 1,405.84

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Solution

The fourth proportional to 1,697.44, 2,344.16 and 1,405.84 is: 1,941.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.44 : 2,344.16 = 1,405.84 : x
  2. Step 2: Convert to fraction form
    1,697.44/2,344.16 = 1,405.84/x
  3. Step 3: Cross multiply
    1,697.44x = 2,344.16 × 1,405.84
  4. Step 4: Simplify right side
    1,697.44x = 3,295,513.89
  5. Step 5: Solve for x
    x = 3,295,513.89/1,697.44
  6. Step 6: Final answer
    x = 1,941.46

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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.