Home / 1,670.49-2,305.12-1,131.03

Finding the Fourth Proportional to 1,670.49, 2,305.12 and 1,131.03

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Solution

The fourth proportional to 1,670.49, 2,305.12 and 1,131.03 is: 1,560.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.49 : 2,305.12 = 1,131.03 : x
  2. Step 2: Convert to fraction form
    1,670.49/2,305.12 = 1,131.03/x
  3. Step 3: Cross multiply
    1,670.49x = 2,305.12 × 1,131.03
  4. Step 4: Simplify right side
    1,670.49x = 2,607,151.28
  5. Step 5: Solve for x
    x = 2,607,151.28/1,670.49
  6. Step 6: Final answer
    x = 1,560.71

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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.