Home / 3,175.01-4,389.87-2,780.90

Finding the Fourth Proportional to 3,175.01, 4,389.87 and 2,780.90

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Solution

The fourth proportional to 3,175.01, 4,389.87 and 2,780.90 is: 3,844.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.01 : 4,389.87 = 2,780.90 : x
  2. Step 2: Convert to fraction form
    3,175.01/4,389.87 = 2,780.90/x
  3. Step 3: Cross multiply
    3,175.01x = 4,389.87 × 2,780.90
  4. Step 4: Simplify right side
    3,175.01x = 12,207,786.74
  5. Step 5: Solve for x
    x = 12,207,786.74/3,175.01
  6. Step 6: Final answer
    x = 3,844.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.