Home / 3,509.42-5,262.81-1,287.53

Finding the Fourth Proportional to 3,509.42, 5,262.81 and 1,287.53

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Solution

The fourth proportional to 3,509.42, 5,262.81 and 1,287.53 is: 1,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.42 : 5,262.81 = 1,287.53 : x
  2. Step 2: Convert to fraction form
    3,509.42/5,262.81 = 1,287.53/x
  3. Step 3: Cross multiply
    3,509.42x = 5,262.81 × 1,287.53
  4. Step 4: Simplify right side
    3,509.42x = 6,775,999.45
  5. Step 5: Solve for x
    x = 6,775,999.45/3,509.42
  6. Step 6: Final answer
    x = 1,930.81

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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.