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Finding the Fourth Proportional to 3,761.51, 5,642.23 and 2,940.47

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Solution

The fourth proportional to 3,761.51, 5,642.23 and 2,940.47 is: 4,410.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.51 : 5,642.23 = 2,940.47 : x
  2. Step 2: Convert to fraction form
    3,761.51/5,642.23 = 2,940.47/x
  3. Step 3: Cross multiply
    3,761.51x = 5,642.23 × 2,940.47
  4. Step 4: Simplify right side
    3,761.51x = 16,590,807.43
  5. Step 5: Solve for x
    x = 16,590,807.43/3,761.51
  6. Step 6: Final answer
    x = 4,410.68

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1.5x scale

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.