Home / 3,127.40-4,300.26-2,997.80

Finding the Fourth Proportional to 3,127.40, 4,300.26 and 2,997.80

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Solution

The fourth proportional to 3,127.40, 4,300.26 and 2,997.80 is: 4,122.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.40 : 4,300.26 = 2,997.80 : x
  2. Step 2: Convert to fraction form
    3,127.40/4,300.26 = 2,997.80/x
  3. Step 3: Cross multiply
    3,127.40x = 4,300.26 × 2,997.80
  4. Step 4: Simplify right side
    3,127.40x = 12,891,319.43
  5. Step 5: Solve for x
    x = 12,891,319.43/3,127.40
  6. Step 6: Final answer
    x = 4,122.06

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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.