Home / 1,392.77-2,087.34-1,043.36

Finding the Fourth Proportional to 1,392.77, 2,087.34 and 1,043.36

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Solution

The fourth proportional to 1,392.77, 2,087.34 and 1,043.36 is: 1,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.77 : 2,087.34 = 1,043.36 : x
  2. Step 2: Convert to fraction form
    1,392.77/2,087.34 = 1,043.36/x
  3. Step 3: Cross multiply
    1,392.77x = 2,087.34 × 1,043.36
  4. Step 4: Simplify right side
    1,392.77x = 2,177,840.54
  5. Step 5: Solve for x
    x = 2,177,840.54/1,392.77
  6. Step 6: Final answer
    x = 1,563.67

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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.