Home / 3,421.74-5,131.86-1,665.99

Finding the Fourth Proportional to 3,421.74, 5,131.86 and 1,665.99

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Solution

The fourth proportional to 3,421.74, 5,131.86 and 1,665.99 is: 2,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.74 : 5,131.86 = 1,665.99 : x
  2. Step 2: Convert to fraction form
    3,421.74/5,131.86 = 1,665.99/x
  3. Step 3: Cross multiply
    3,421.74x = 5,131.86 × 1,665.99
  4. Step 4: Simplify right side
    3,421.74x = 8,549,627.44
  5. Step 5: Solve for x
    x = 8,549,627.44/3,421.74
  6. Step 6: Final answer
    x = 2,498.62

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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.