Home / 3,127.45-4,319.13-2,705.80

Finding the Fourth Proportional to 3,127.45, 4,319.13 and 2,705.80

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Solution

The fourth proportional to 3,127.45, 4,319.13 and 2,705.80 is: 3,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.45 : 4,319.13 = 2,705.80 : x
  2. Step 2: Convert to fraction form
    3,127.45/4,319.13 = 2,705.80/x
  3. Step 3: Cross multiply
    3,127.45x = 4,319.13 × 2,705.80
  4. Step 4: Simplify right side
    3,127.45x = 11,686,701.95
  5. Step 5: Solve for x
    x = 11,686,701.95/3,127.45
  6. Step 6: Final answer
    x = 3,736.81

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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.