Home / 3,181.90-4,774.20-1,537.60

Finding the Fourth Proportional to 3,181.90, 4,774.20 and 1,537.60

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Solution

The fourth proportional to 3,181.90, 4,774.20 and 1,537.60 is: 2,307.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.90 : 4,774.20 = 1,537.60 : x
  2. Step 2: Convert to fraction form
    3,181.90/4,774.20 = 1,537.60/x
  3. Step 3: Cross multiply
    3,181.90x = 4,774.20 × 1,537.60
  4. Step 4: Simplify right side
    3,181.90x = 7,340,809.92
  5. Step 5: Solve for x
    x = 7,340,809.92/3,181.90
  6. Step 6: Final answer
    x = 2,307.05

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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.