Home / 1,605.29-2,215.67-942.36

Finding the Fourth Proportional to 1,605.29, 2,215.67 and 942.36

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Solution

The fourth proportional to 1,605.29, 2,215.67 and 942.36 is: 1,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.29 : 2,215.67 = 942.36 : x
  2. Step 2: Convert to fraction form
    1,605.29/2,215.67 = 942.36/x
  3. Step 3: Cross multiply
    1,605.29x = 2,215.67 × 942.36
  4. Step 4: Simplify right side
    1,605.29x = 2,087,947.70
  5. Step 5: Solve for x
    x = 2,087,947.70/1,605.29
  6. Step 6: Final answer
    x = 1,300.67

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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.