Home / 3,045.12-4,201.96-1,866

Finding the Fourth Proportional to 3,045.12, 4,201.96 and 1,866

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Solution

The fourth proportional to 3,045.12, 4,201.96 and 1,866 is: 2,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.12 : 4,201.96 = 1,866 : x
  2. Step 2: Convert to fraction form
    3,045.12/4,201.96 = 1,866/x
  3. Step 3: Cross multiply
    3,045.12x = 4,201.96 × 1,866
  4. Step 4: Simplify right side
    3,045.12x = 7,840,857.36
  5. Step 5: Solve for x
    x = 7,840,857.36/3,045.12
  6. Step 6: Final answer
    x = 2,574.89

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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.