Home / 3,571.74-4,931.19-2,828.70

Finding the Fourth Proportional to 3,571.74, 4,931.19 and 2,828.70

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Solution

The fourth proportional to 3,571.74, 4,931.19 and 2,828.70 is: 3,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.74 : 4,931.19 = 2,828.70 : x
  2. Step 2: Convert to fraction form
    3,571.74/4,931.19 = 2,828.70/x
  3. Step 3: Cross multiply
    3,571.74x = 4,931.19 × 2,828.70
  4. Step 4: Simplify right side
    3,571.74x = 13,948,857.15
  5. Step 5: Solve for x
    x = 13,948,857.15/3,571.74
  6. Step 6: Final answer
    x = 3,905.34

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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.