Home / 3,518.35-4,855.28-2,121.10

Finding the Fourth Proportional to 3,518.35, 4,855.28 and 2,121.10

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Solution

The fourth proportional to 3,518.35, 4,855.28 and 2,121.10 is: 2,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.35 : 4,855.28 = 2,121.10 : x
  2. Step 2: Convert to fraction form
    3,518.35/4,855.28 = 2,121.10/x
  3. Step 3: Cross multiply
    3,518.35x = 4,855.28 × 2,121.10
  4. Step 4: Simplify right side
    3,518.35x = 10,298,511.66
  5. Step 5: Solve for x
    x = 10,298,511.66/3,518.35
  6. Step 6: Final answer
    x = 2,927.09

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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.