Home / 1,721.80-2,582.70-1,612.45

Finding the Fourth Proportional to 1,721.80, 2,582.70 and 1,612.45

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Solution

The fourth proportional to 1,721.80, 2,582.70 and 1,612.45 is: 2,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.80 : 2,582.70 = 1,612.45 : x
  2. Step 2: Convert to fraction form
    1,721.80/2,582.70 = 1,612.45/x
  3. Step 3: Cross multiply
    1,721.80x = 2,582.70 × 1,612.45
  4. Step 4: Simplify right side
    1,721.80x = 4,164,474.62
  5. Step 5: Solve for x
    x = 4,164,474.62/1,721.80
  6. Step 6: Final answer
    x = 2,418.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.