Home / 1,768.42-2,442.90-1,637.20

Finding the Fourth Proportional to 1,768.42, 2,442.90 and 1,637.20

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Solution

The fourth proportional to 1,768.42, 2,442.90 and 1,637.20 is: 2,261.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.42 : 2,442.90 = 1,637.20 : x
  2. Step 2: Convert to fraction form
    1,768.42/2,442.90 = 1,637.20/x
  3. Step 3: Cross multiply
    1,768.42x = 2,442.90 × 1,637.20
  4. Step 4: Simplify right side
    1,768.42x = 3,999,515.88
  5. Step 5: Solve for x
    x = 3,999,515.88/1,768.42
  6. Step 6: Final answer
    x = 2,261.63

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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.