Home / 1,938.12-2,900.70-1,591.44

Finding the Fourth Proportional to 1,938.12, 2,900.70 and 1,591.44

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Solution

The fourth proportional to 1,938.12, 2,900.70 and 1,591.44 is: 2,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.12 : 2,900.70 = 1,591.44 : x
  2. Step 2: Convert to fraction form
    1,938.12/2,900.70 = 1,591.44/x
  3. Step 3: Cross multiply
    1,938.12x = 2,900.70 × 1,591.44
  4. Step 4: Simplify right side
    1,938.12x = 4,616,290.01
  5. Step 5: Solve for x
    x = 4,616,290.01/1,938.12
  6. Step 6: Final answer
    x = 2,381.84

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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.