Home / 1,945.61-2,918.37-558.95

Finding the Fourth Proportional to 1,945.61, 2,918.37 and 558.95

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Solution

The fourth proportional to 1,945.61, 2,918.37 and 558.95 is: 838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.61 : 2,918.37 = 558.95 : x
  2. Step 2: Convert to fraction form
    1,945.61/2,918.37 = 558.95/x
  3. Step 3: Cross multiply
    1,945.61x = 2,918.37 × 558.95
  4. Step 4: Simplify right side
    1,945.61x = 1,631,222.91
  5. Step 5: Solve for x
    x = 1,631,222.91/1,945.61
  6. Step 6: Final answer
    x = 838.41

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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.