Home / 1,605.25-2,215.83-942.66

Finding the Fourth Proportional to 1,605.25, 2,215.83 and 942.66

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Solution

The fourth proportional to 1,605.25, 2,215.83 and 942.66 is: 1,301.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.25 : 2,215.83 = 942.66 : x
  2. Step 2: Convert to fraction form
    1,605.25/2,215.83 = 942.66/x
  3. Step 3: Cross multiply
    1,605.25x = 2,215.83 × 942.66
  4. Step 4: Simplify right side
    1,605.25x = 2,088,774.31
  5. Step 5: Solve for x
    x = 2,088,774.31/1,605.25
  6. Step 6: Final answer
    x = 1,301.21

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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.