Home / 1,620.11-2,429.88-524.31

Finding the Fourth Proportional to 1,620.11, 2,429.88 and 524.31

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Solution

The fourth proportional to 1,620.11, 2,429.88 and 524.31 is: 786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.11 : 2,429.88 = 524.31 : x
  2. Step 2: Convert to fraction form
    1,620.11/2,429.88 = 524.31/x
  3. Step 3: Cross multiply
    1,620.11x = 2,429.88 × 524.31
  4. Step 4: Simplify right side
    1,620.11x = 1,274,010.38
  5. Step 5: Solve for x
    x = 1,274,010.38/1,620.11
  6. Step 6: Final answer
    x = 786.38

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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.