Home / 1,621.06-2,431.45-581.83

Finding the Fourth Proportional to 1,621.06, 2,431.45 and 581.83

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Solution

The fourth proportional to 1,621.06, 2,431.45 and 581.83 is: 872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.06 : 2,431.45 = 581.83 : x
  2. Step 2: Convert to fraction form
    1,621.06/2,431.45 = 581.83/x
  3. Step 3: Cross multiply
    1,621.06x = 2,431.45 × 581.83
  4. Step 4: Simplify right side
    1,621.06x = 1,414,690.55
  5. Step 5: Solve for x
    x = 1,414,690.55/1,621.06
  6. Step 6: Final answer
    x = 872.69

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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.