Home / 1,453.32-2,180.39-712.98

Finding the Fourth Proportional to 1,453.32, 2,180.39 and 712.98

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Solution

The fourth proportional to 1,453.32, 2,180.39 and 712.98 is: 1,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.32 : 2,180.39 = 712.98 : x
  2. Step 2: Convert to fraction form
    1,453.32/2,180.39 = 712.98/x
  3. Step 3: Cross multiply
    1,453.32x = 2,180.39 × 712.98
  4. Step 4: Simplify right side
    1,453.32x = 1,554,570.90
  5. Step 5: Solve for x
    x = 1,554,570.90/1,453.32
  6. Step 6: Final answer
    x = 1,069.67

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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.