Home / 8,386.90-12,581.87-3,453.80

Finding the Fourth Proportional to 8,386.90, 12,581.87 and 3,453.80

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Solution

The fourth proportional to 8,386.90, 12,581.87 and 3,453.80 is: 5,181.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.90 : 12,581.87 = 3,453.80 : x
  2. Step 2: Convert to fraction form
    8,386.90/12,581.87 = 3,453.80/x
  3. Step 3: Cross multiply
    8,386.90x = 12,581.87 × 3,453.80
  4. Step 4: Simplify right side
    8,386.90x = 43,455,182.43
  5. Step 5: Solve for x
    x = 43,455,182.43/8,386.90
  6. Step 6: Final answer
    x = 5,181.32

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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.