Home / 4,917.21-6,785.48-2,821.34

Finding the Fourth Proportional to 4,917.21, 6,785.48 and 2,821.34

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Solution

The fourth proportional to 4,917.21, 6,785.48 and 2,821.34 is: 3,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.21 : 6,785.48 = 2,821.34 : x
  2. Step 2: Convert to fraction form
    4,917.21/6,785.48 = 2,821.34/x
  3. Step 3: Cross multiply
    4,917.21x = 6,785.48 × 2,821.34
  4. Step 4: Simplify right side
    4,917.21x = 19,144,098.11
  5. Step 5: Solve for x
    x = 19,144,098.11/4,917.21
  6. Step 6: Final answer
    x = 3,893.28

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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.