Home / 3,122.07-4,306.55-2,127.80

Finding the Fourth Proportional to 3,122.07, 4,306.55 and 2,127.80

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Solution

The fourth proportional to 3,122.07, 4,306.55 and 2,127.80 is: 2,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.07 : 4,306.55 = 2,127.80 : x
  2. Step 2: Convert to fraction form
    3,122.07/4,306.55 = 2,127.80/x
  3. Step 3: Cross multiply
    3,122.07x = 4,306.55 × 2,127.80
  4. Step 4: Simplify right side
    3,122.07x = 9,163,444.92
  5. Step 5: Solve for x
    x = 9,163,444.92/3,122.07
  6. Step 6: Final answer
    x = 2,935.05

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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.