Home / 3,520.32-4,857.12-2,122.08

Finding the Fourth Proportional to 3,520.32, 4,857.12 and 2,122.08

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Solution

The fourth proportional to 3,520.32, 4,857.12 and 2,122.08 is: 2,927.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.32 : 4,857.12 = 2,122.08 : x
  2. Step 2: Convert to fraction form
    3,520.32/4,857.12 = 2,122.08/x
  3. Step 3: Cross multiply
    3,520.32x = 4,857.12 × 2,122.08
  4. Step 4: Simplify right side
    3,520.32x = 10,307,197.21
  5. Step 5: Solve for x
    x = 10,307,197.21/3,520.32
  6. Step 6: Final answer
    x = 2,927.91

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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.