Home / 1,558.48-2,338.16-518.56

Finding the Fourth Proportional to 1,558.48, 2,338.16 and 518.56

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Solution

The fourth proportional to 1,558.48, 2,338.16 and 518.56 is: 777.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.48 : 2,338.16 = 518.56 : x
  2. Step 2: Convert to fraction form
    1,558.48/2,338.16 = 518.56/x
  3. Step 3: Cross multiply
    1,558.48x = 2,338.16 × 518.56
  4. Step 4: Simplify right side
    1,558.48x = 1,212,476.25
  5. Step 5: Solve for x
    x = 1,212,476.25/1,558.48
  6. Step 6: Final answer
    x = 777.99

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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.