Home / 1,620.24-2,431.11-580.67

Finding the Fourth Proportional to 1,620.24, 2,431.11 and 580.67

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Solution

The fourth proportional to 1,620.24, 2,431.11 and 580.67 is: 871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.24 : 2,431.11 = 580.67 : x
  2. Step 2: Convert to fraction form
    1,620.24/2,431.11 = 580.67/x
  3. Step 3: Cross multiply
    1,620.24x = 2,431.11 × 580.67
  4. Step 4: Simplify right side
    1,620.24x = 1,411,671.78
  5. Step 5: Solve for x
    x = 1,411,671.78/1,620.24
  6. Step 6: Final answer
    x = 871.28

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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.