Home / 1,728.17-2,384.87-942.22

Finding the Fourth Proportional to 1,728.17, 2,384.87 and 942.22

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Solution

The fourth proportional to 1,728.17, 2,384.87 and 942.22 is: 1,300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.17 : 2,384.87 = 942.22 : x
  2. Step 2: Convert to fraction form
    1,728.17/2,384.87 = 942.22/x
  3. Step 3: Cross multiply
    1,728.17x = 2,384.87 × 942.22
  4. Step 4: Simplify right side
    1,728.17x = 2,247,072.21
  5. Step 5: Solve for x
    x = 2,247,072.21/1,728.17
  6. Step 6: Final answer
    x = 1,300.26

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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.