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Finding the Fourth Proportional to 2,670.56, 3,685.31 and 1,491.66

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Solution

The fourth proportional to 2,670.56, 3,685.31 and 1,491.66 is: 2,058.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.56 : 3,685.31 = 1,491.66 : x
  2. Step 2: Convert to fraction form
    2,670.56/3,685.31 = 1,491.66/x
  3. Step 3: Cross multiply
    2,670.56x = 3,685.31 × 1,491.66
  4. Step 4: Simplify right side
    2,670.56x = 5,497,211.09
  5. Step 5: Solve for x
    x = 5,497,211.09/2,670.56
  6. Step 6: Final answer
    x = 2,058.45

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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.