Home / 1,605.20-2,215.19-942.45

Finding the Fourth Proportional to 1,605.20, 2,215.19 and 942.45

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Solution

The fourth proportional to 1,605.20, 2,215.19 and 942.45 is: 1,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.20 : 2,215.19 = 942.45 : x
  2. Step 2: Convert to fraction form
    1,605.20/2,215.19 = 942.45/x
  3. Step 3: Cross multiply
    1,605.20x = 2,215.19 × 942.45
  4. Step 4: Simplify right side
    1,605.20x = 2,087,701.10
  5. Step 5: Solve for x
    x = 2,087,701.10/1,605.20
  6. Step 6: Final answer
    x = 1,300.59

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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.