Home / 1,297.16-1,781.38-1,110.66

Finding the Fourth Proportional to 1,297.16, 1,781.38 and 1,110.66

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Solution

The fourth proportional to 1,297.16, 1,781.38 and 1,110.66 is: 1,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.16 : 1,781.38 = 1,110.66 : x
  2. Step 2: Convert to fraction form
    1,297.16/1,781.38 = 1,110.66/x
  3. Step 3: Cross multiply
    1,297.16x = 1,781.38 × 1,110.66
  4. Step 4: Simplify right side
    1,297.16x = 1,978,507.51
  5. Step 5: Solve for x
    x = 1,978,507.51/1,297.16
  6. Step 6: Final answer
    x = 1,525.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.