Home / 1,728.45-2,385.19-942.50

Finding the Fourth Proportional to 1,728.45, 2,385.19 and 942.50

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Solution

The fourth proportional to 1,728.45, 2,385.19 and 942.50 is: 1,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.45 : 2,385.19 = 942.50 : x
  2. Step 2: Convert to fraction form
    1,728.45/2,385.19 = 942.50/x
  3. Step 3: Cross multiply
    1,728.45x = 2,385.19 × 942.50
  4. Step 4: Simplify right side
    1,728.45x = 2,248,041.58
  5. Step 5: Solve for x
    x = 2,248,041.58/1,728.45
  6. Step 6: Final answer
    x = 1,300.61

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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.