Home / 1,245.72-1,867.80-552.36

Finding the Fourth Proportional to 1,245.72, 1,867.80 and 552.36

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Solution

The fourth proportional to 1,245.72, 1,867.80 and 552.36 is: 828.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.72 : 1,867.80 = 552.36 : x
  2. Step 2: Convert to fraction form
    1,245.72/1,867.80 = 552.36/x
  3. Step 3: Cross multiply
    1,245.72x = 1,867.80 × 552.36
  4. Step 4: Simplify right side
    1,245.72x = 1,031,698.01
  5. Step 5: Solve for x
    x = 1,031,698.01/1,245.72
  6. Step 6: Final answer
    x = 828.19

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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.