Home / 3,281.09-4,920.48-1,431.68

Finding the Fourth Proportional to 3,281.09, 4,920.48 and 1,431.68

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Solution

The fourth proportional to 3,281.09, 4,920.48 and 1,431.68 is: 2,147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.09 : 4,920.48 = 1,431.68 : x
  2. Step 2: Convert to fraction form
    3,281.09/4,920.48 = 1,431.68/x
  3. Step 3: Cross multiply
    3,281.09x = 4,920.48 × 1,431.68
  4. Step 4: Simplify right side
    3,281.09x = 7,044,528.20
  5. Step 5: Solve for x
    x = 7,044,528.20/3,281.09
  6. Step 6: Final answer
    x = 2,147.01

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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.