Home / 1,621.66-2,431.98-525.80

Finding the Fourth Proportional to 1,621.66, 2,431.98 and 525.80

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Solution

The fourth proportional to 1,621.66, 2,431.98 and 525.80 is: 788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.66 : 2,431.98 = 525.80 : x
  2. Step 2: Convert to fraction form
    1,621.66/2,431.98 = 525.80/x
  3. Step 3: Cross multiply
    1,621.66x = 2,431.98 × 525.80
  4. Step 4: Simplify right side
    1,621.66x = 1,278,735.08
  5. Step 5: Solve for x
    x = 1,278,735.08/1,621.66
  6. Step 6: Final answer
    x = 788.53

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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.