Home / 1,620.27-2,429.79-524.34

Finding the Fourth Proportional to 1,620.27, 2,429.79 and 524.34

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Solution

The fourth proportional to 1,620.27, 2,429.79 and 524.34 is: 786.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.27 : 2,429.79 = 524.34 : x
  2. Step 2: Convert to fraction form
    1,620.27/2,429.79 = 524.34/x
  3. Step 3: Cross multiply
    1,620.27x = 2,429.79 × 524.34
  4. Step 4: Simplify right side
    1,620.27x = 1,274,036.09
  5. Step 5: Solve for x
    x = 1,274,036.09/1,620.27
  6. Step 6: Final answer
    x = 786.31

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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.