Home / 3,780.30-5,671.30-1,281.34

Finding the Fourth Proportional to 3,780.30, 5,671.30 and 1,281.34

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Solution

The fourth proportional to 3,780.30, 5,671.30 and 1,281.34 is: 1,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.30 : 5,671.30 = 1,281.34 : x
  2. Step 2: Convert to fraction form
    3,780.30/5,671.30 = 1,281.34/x
  3. Step 3: Cross multiply
    3,780.30x = 5,671.30 × 1,281.34
  4. Step 4: Simplify right side
    3,780.30x = 7,266,885.78
  5. Step 5: Solve for x
    x = 7,266,885.78/3,780.30
  6. Step 6: Final answer
    x = 1,922.30

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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.