Home / 1,488.63-2,232.72-939.15

Finding the Fourth Proportional to 1,488.63, 2,232.72 and 939.15

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Solution

The fourth proportional to 1,488.63, 2,232.72 and 939.15 is: 1,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.63 : 2,232.72 = 939.15 : x
  2. Step 2: Convert to fraction form
    1,488.63/2,232.72 = 939.15/x
  3. Step 3: Cross multiply
    1,488.63x = 2,232.72 × 939.15
  4. Step 4: Simplify right side
    1,488.63x = 2,096,858.99
  5. Step 5: Solve for x
    x = 2,096,858.99/1,488.63
  6. Step 6: Final answer
    x = 1,408.58

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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.