Home / 4,759.12-7,138.80-1,472.20

Finding the Fourth Proportional to 4,759.12, 7,138.80 and 1,472.20

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Solution

The fourth proportional to 4,759.12, 7,138.80 and 1,472.20 is: 2,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.12 : 7,138.80 = 1,472.20 : x
  2. Step 2: Convert to fraction form
    4,759.12/7,138.80 = 1,472.20/x
  3. Step 3: Cross multiply
    4,759.12x = 7,138.80 × 1,472.20
  4. Step 4: Simplify right side
    4,759.12x = 10,509,741.36
  5. Step 5: Solve for x
    x = 10,509,741.36/4,759.12
  6. Step 6: Final answer
    x = 2,208.34

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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.