Home / 1,647.57-2,273.63-939.53

Finding the Fourth Proportional to 1,647.57, 2,273.63 and 939.53

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Solution

The fourth proportional to 1,647.57, 2,273.63 and 939.53 is: 1,296.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.57 : 2,273.63 = 939.53 : x
  2. Step 2: Convert to fraction form
    1,647.57/2,273.63 = 939.53/x
  3. Step 3: Cross multiply
    1,647.57x = 2,273.63 × 939.53
  4. Step 4: Simplify right side
    1,647.57x = 2,136,134.57
  5. Step 5: Solve for x
    x = 2,136,134.57/1,647.57
  6. Step 6: Final answer
    x = 1,296.54

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1.5x scale

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.