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Finding the Fourth Proportional to 3,357.74, 4,633.90 and 1,866

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Solution

The fourth proportional to 3,357.74, 4,633.90 and 1,866 is: 2,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.74 : 4,633.90 = 1,866 : x
  2. Step 2: Convert to fraction form
    3,357.74/4,633.90 = 1,866/x
  3. Step 3: Cross multiply
    3,357.74x = 4,633.90 × 1,866
  4. Step 4: Simplify right side
    3,357.74x = 8,646,857.40
  5. Step 5: Solve for x
    x = 8,646,857.40/3,357.74
  6. Step 6: Final answer
    x = 2,575.20

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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.