Home / 3,716.06-5,128.74-2,122.70

Finding the Fourth Proportional to 3,716.06, 5,128.74 and 2,122.70

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Solution

The fourth proportional to 3,716.06, 5,128.74 and 2,122.70 is: 2,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,716.06 : 5,128.74 = 2,122.70 : x
  2. Step 2: Convert to fraction form
    3,716.06/5,128.74 = 2,122.70/x
  3. Step 3: Cross multiply
    3,716.06x = 5,128.74 × 2,122.70
  4. Step 4: Simplify right side
    3,716.06x = 10,886,776.40
  5. Step 5: Solve for x
    x = 10,886,776.40/3,716.06
  6. Step 6: Final answer
    x = 2,929.66

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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.