Home / 1,621.22-2,431.82-525.69

Finding the Fourth Proportional to 1,621.22, 2,431.82 and 525.69

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Solution

The fourth proportional to 1,621.22, 2,431.82 and 525.69 is: 788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.22 : 2,431.82 = 525.69 : x
  2. Step 2: Convert to fraction form
    1,621.22/2,431.82 = 525.69/x
  3. Step 3: Cross multiply
    1,621.22x = 2,431.82 × 525.69
  4. Step 4: Simplify right side
    1,621.22x = 1,278,384.77
  5. Step 5: Solve for x
    x = 1,278,384.77/1,621.22
  6. Step 6: Final answer
    x = 788.54

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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.