Home / 1,647.47-2,273.70-939.53

Finding the Fourth Proportional to 1,647.47, 2,273.70 and 939.53

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Solution

The fourth proportional to 1,647.47, 2,273.70 and 939.53 is: 1,296.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.47 : 2,273.70 = 939.53 : x
  2. Step 2: Convert to fraction form
    1,647.47/2,273.70 = 939.53/x
  3. Step 3: Cross multiply
    1,647.47x = 2,273.70 × 939.53
  4. Step 4: Simplify right side
    1,647.47x = 2,136,197.99
  5. Step 5: Solve for x
    x = 2,136,197.99/1,647.47
  6. Step 6: Final answer
    x = 1,296.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.