Home / 5,290.21-7,936.19-1,780.53

Finding the Fourth Proportional to 5,290.21, 7,936.19 and 1,780.53

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Solution

The fourth proportional to 5,290.21, 7,936.19 and 1,780.53 is: 2,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.21 : 7,936.19 = 1,780.53 : x
  2. Step 2: Convert to fraction form
    5,290.21/7,936.19 = 1,780.53/x
  3. Step 3: Cross multiply
    5,290.21x = 7,936.19 × 1,780.53
  4. Step 4: Simplify right side
    5,290.21x = 14,130,624.38
  5. Step 5: Solve for x
    x = 14,130,624.38/5,290.21
  6. Step 6: Final answer
    x = 2,671.09

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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.