Home / 1,486.40-2,230.41-938.84

Finding the Fourth Proportional to 1,486.40, 2,230.41 and 938.84

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Solution

The fourth proportional to 1,486.40, 2,230.41 and 938.84 is: 1,408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.40 : 2,230.41 = 938.84 : x
  2. Step 2: Convert to fraction form
    1,486.40/2,230.41 = 938.84/x
  3. Step 3: Cross multiply
    1,486.40x = 2,230.41 × 938.84
  4. Step 4: Simplify right side
    1,486.40x = 2,093,998.12
  5. Step 5: Solve for x
    x = 2,093,998.12/1,486.40
  6. Step 6: Final answer
    x = 1,408.77

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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.