Home / 1,343.37-2,012.53-521.22

Finding the Fourth Proportional to 1,343.37, 2,012.53 and 521.22

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Solution

The fourth proportional to 1,343.37, 2,012.53 and 521.22 is: 780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.37 : 2,012.53 = 521.22 : x
  2. Step 2: Convert to fraction form
    1,343.37/2,012.53 = 521.22/x
  3. Step 3: Cross multiply
    1,343.37x = 2,012.53 × 521.22
  4. Step 4: Simplify right side
    1,343.37x = 1,048,970.89
  5. Step 5: Solve for x
    x = 1,048,970.89/1,343.37
  6. Step 6: Final answer
    x = 780.85

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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.