Home / 1,670.91-2,306.73-1,297.05

Finding the Fourth Proportional to 1,670.91, 2,306.73 and 1,297.05

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Solution

The fourth proportional to 1,670.91, 2,306.73 and 1,297.05 is: 1,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.91 : 2,306.73 = 1,297.05 : x
  2. Step 2: Convert to fraction form
    1,670.91/2,306.73 = 1,297.05/x
  3. Step 3: Cross multiply
    1,670.91x = 2,306.73 × 1,297.05
  4. Step 4: Simplify right side
    1,670.91x = 2,991,944.15
  5. Step 5: Solve for x
    x = 2,991,944.15/1,670.91
  6. Step 6: Final answer
    x = 1,790.61

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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.