Home / 1,081.32-1,621.26-525.89

Finding the Fourth Proportional to 1,081.32, 1,621.26 and 525.89

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Solution

The fourth proportional to 1,081.32, 1,621.26 and 525.89 is: 788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.32 : 1,621.26 = 525.89 : x
  2. Step 2: Convert to fraction form
    1,081.32/1,621.26 = 525.89/x
  3. Step 3: Cross multiply
    1,081.32x = 1,621.26 × 525.89
  4. Step 4: Simplify right side
    1,081.32x = 852,596.32
  5. Step 5: Solve for x
    x = 852,596.32/1,081.32
  6. Step 6: Final answer
    x = 788.48

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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.