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Finding the Fourth Proportional to 1,840.51, 2,761.94 and 670.40

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Solution

The fourth proportional to 1,840.51, 2,761.94 and 670.40 is: 1,006.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.51 : 2,761.94 = 670.40 : x
  2. Step 2: Convert to fraction form
    1,840.51/2,761.94 = 670.40/x
  3. Step 3: Cross multiply
    1,840.51x = 2,761.94 × 670.40
  4. Step 4: Simplify right side
    1,840.51x = 1,851,601.22
  5. Step 5: Solve for x
    x = 1,851,601.22/1,840.51
  6. Step 6: Final answer
    x = 1,006.03

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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.