Home / 1,352.28-2,027.60-486.40

Finding the Fourth Proportional to 1,352.28, 2,027.60 and 486.40

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Solution

The fourth proportional to 1,352.28, 2,027.60 and 486.40 is: 729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.28 : 2,027.60 = 486.40 : x
  2. Step 2: Convert to fraction form
    1,352.28/2,027.60 = 486.40/x
  3. Step 3: Cross multiply
    1,352.28x = 2,027.60 × 486.40
  4. Step 4: Simplify right side
    1,352.28x = 986,224.64
  5. Step 5: Solve for x
    x = 986,224.64/1,352.28
  6. Step 6: Final answer
    x = 729.31

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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.