Home / 1,420.62-2,126.06-1,297.36

Finding the Fourth Proportional to 1,420.62, 2,126.06 and 1,297.36

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Solution

The fourth proportional to 1,420.62, 2,126.06 and 1,297.36 is: 1,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.62 : 2,126.06 = 1,297.36 : x
  2. Step 2: Convert to fraction form
    1,420.62/2,126.06 = 1,297.36/x
  3. Step 3: Cross multiply
    1,420.62x = 2,126.06 × 1,297.36
  4. Step 4: Simplify right side
    1,420.62x = 2,758,265.20
  5. Step 5: Solve for x
    x = 2,758,265.20/1,420.62
  6. Step 6: Final answer
    x = 1,941.59

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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.