Home / 3,181.86-4,774.68-1,720.98

Finding the Fourth Proportional to 3,181.86, 4,774.68 and 1,720.98

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Solution

The fourth proportional to 3,181.86, 4,774.68 and 1,720.98 is: 2,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.86 : 4,774.68 = 1,720.98 : x
  2. Step 2: Convert to fraction form
    3,181.86/4,774.68 = 1,720.98/x
  3. Step 3: Cross multiply
    3,181.86x = 4,774.68 × 1,720.98
  4. Step 4: Simplify right side
    3,181.86x = 8,217,128.79
  5. Step 5: Solve for x
    x = 8,217,128.79/3,181.86
  6. Step 6: Final answer
    x = 2,582.49

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1.5x scale

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.