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Finding the Fourth Proportional to 1,939.83, 2,907.63 and 953.33

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Solution

The fourth proportional to 1,939.83, 2,907.63 and 953.33 is: 1,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.83 : 2,907.63 = 953.33 : x
  2. Step 2: Convert to fraction form
    1,939.83/2,907.63 = 953.33/x
  3. Step 3: Cross multiply
    1,939.83x = 2,907.63 × 953.33
  4. Step 4: Simplify right side
    1,939.83x = 2,771,916.37
  5. Step 5: Solve for x
    x = 2,771,916.37/1,939.83
  6. Step 6: Final answer
    x = 1,428.95

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1.5x scale

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.