Home / 1,728.27-2,385.05-942.35

Finding the Fourth Proportional to 1,728.27, 2,385.05 and 942.35

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Solution

The fourth proportional to 1,728.27, 2,385.05 and 942.35 is: 1,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.27 : 2,385.05 = 942.35 : x
  2. Step 2: Convert to fraction form
    1,728.27/2,385.05 = 942.35/x
  3. Step 3: Cross multiply
    1,728.27x = 2,385.05 × 942.35
  4. Step 4: Simplify right side
    1,728.27x = 2,247,535.23
  5. Step 5: Solve for x
    x = 2,247,535.23/1,728.27
  6. Step 6: Final answer
    x = 1,300.45

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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.