Home / 1,728.16-2,384.56-1,029.68

Finding the Fourth Proportional to 1,728.16, 2,384.56 and 1,029.68

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Solution

The fourth proportional to 1,728.16, 2,384.56 and 1,029.68 is: 1,420.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.16 : 2,384.56 = 1,029.68 : x
  2. Step 2: Convert to fraction form
    1,728.16/2,384.56 = 1,029.68/x
  3. Step 3: Cross multiply
    1,728.16x = 2,384.56 × 1,029.68
  4. Step 4: Simplify right side
    1,728.16x = 2,455,333.74
  5. Step 5: Solve for x
    x = 2,455,333.74/1,728.16
  6. Step 6: Final answer
    x = 1,420.78

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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.