Home / 3,620.16-4,990.32-2,982.96

Finding the Fourth Proportional to 3,620.16, 4,990.32 and 2,982.96

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Solution

The fourth proportional to 3,620.16, 4,990.32 and 2,982.96 is: 4,111.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.16 : 4,990.32 = 2,982.96 : x
  2. Step 2: Convert to fraction form
    3,620.16/4,990.32 = 2,982.96/x
  3. Step 3: Cross multiply
    3,620.16x = 4,990.32 × 2,982.96
  4. Step 4: Simplify right side
    3,620.16x = 14,885,924.95
  5. Step 5: Solve for x
    x = 14,885,924.95/3,620.16
  6. Step 6: Final answer
    x = 4,111.95

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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.