Home / 1,621.44-2,432.62-525.78

Finding the Fourth Proportional to 1,621.44, 2,432.62 and 525.78

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Solution

The fourth proportional to 1,621.44, 2,432.62 and 525.78 is: 788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.44 : 2,432.62 = 525.78 : x
  2. Step 2: Convert to fraction form
    1,621.44/2,432.62 = 525.78/x
  3. Step 3: Cross multiply
    1,621.44x = 2,432.62 × 525.78
  4. Step 4: Simplify right side
    1,621.44x = 1,279,022.94
  5. Step 5: Solve for x
    x = 1,279,022.94/1,621.44
  6. Step 6: Final answer
    x = 788.82

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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.