Home / 1,475.37-2,212.80-487.88

Finding the Fourth Proportional to 1,475.37, 2,212.80 and 487.88

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Solution

The fourth proportional to 1,475.37, 2,212.80 and 487.88 is: 731.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.37 : 2,212.80 = 487.88 : x
  2. Step 2: Convert to fraction form
    1,475.37/2,212.80 = 487.88/x
  3. Step 3: Cross multiply
    1,475.37x = 2,212.80 × 487.88
  4. Step 4: Simplify right side
    1,475.37x = 1,079,567.36
  5. Step 5: Solve for x
    x = 1,079,567.36/1,475.37
  6. Step 6: Final answer
    x = 731.73

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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.