Home / 1,728.78-2,385.99-1,030.56

Finding the Fourth Proportional to 1,728.78, 2,385.99 and 1,030.56

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Solution

The fourth proportional to 1,728.78, 2,385.99 and 1,030.56 is: 1,422.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.78 : 2,385.99 = 1,030.56 : x
  2. Step 2: Convert to fraction form
    1,728.78/2,385.99 = 1,030.56/x
  3. Step 3: Cross multiply
    1,728.78x = 2,385.99 × 1,030.56
  4. Step 4: Simplify right side
    1,728.78x = 2,458,905.85
  5. Step 5: Solve for x
    x = 2,458,905.85/1,728.78
  6. Step 6: Final answer
    x = 1,422.34

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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.