Home / 1,427.56-2,141.40-453.67

Finding the Fourth Proportional to 1,427.56, 2,141.40 and 453.67

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Solution

The fourth proportional to 1,427.56, 2,141.40 and 453.67 is: 680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.56 : 2,141.40 = 453.67 : x
  2. Step 2: Convert to fraction form
    1,427.56/2,141.40 = 453.67/x
  3. Step 3: Cross multiply
    1,427.56x = 2,141.40 × 453.67
  4. Step 4: Simplify right side
    1,427.56x = 971,485.29
  5. Step 5: Solve for x
    x = 971,485.29/1,427.56
  6. Step 6: Final answer
    x = 680.52

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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.