Home / 3,127.45-4,319.42-2,131.00

Finding the Fourth Proportional to 3,127.45, 4,319.42 and 2,131.00

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Solution

The fourth proportional to 3,127.45, 4,319.42 and 2,131.00 is: 2,943.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.45 : 4,319.42 = 2,131.00 : x
  2. Step 2: Convert to fraction form
    3,127.45/4,319.42 = 2,131.00/x
  3. Step 3: Cross multiply
    3,127.45x = 4,319.42 × 2,131.00
  4. Step 4: Simplify right side
    3,127.45x = 9,204,678.55
  5. Step 5: Solve for x
    x = 9,204,678.55/3,127.45
  6. Step 6: Final answer
    x = 2,943.19

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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.