Home / 1,580.64-2,376.24-1,121.73

Finding the Fourth Proportional to 1,580.64, 2,376.24 and 1,121.73

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Solution

The fourth proportional to 1,580.64, 2,376.24 and 1,121.73 is: 1,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.64 : 2,376.24 = 1,121.73 : x
  2. Step 2: Convert to fraction form
    1,580.64/2,376.24 = 1,121.73/x
  3. Step 3: Cross multiply
    1,580.64x = 2,376.24 × 1,121.73
  4. Step 4: Simplify right side
    1,580.64x = 2,665,499.70
  5. Step 5: Solve for x
    x = 2,665,499.70/1,580.64
  6. Step 6: Final answer
    x = 1,686.34

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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.