Home / 3,378.04-4,662.32-2,120.22

Finding the Fourth Proportional to 3,378.04, 4,662.32 and 2,120.22

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Solution

The fourth proportional to 3,378.04, 4,662.32 and 2,120.22 is: 2,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.04 : 4,662.32 = 2,120.22 : x
  2. Step 2: Convert to fraction form
    3,378.04/4,662.32 = 2,120.22/x
  3. Step 3: Cross multiply
    3,378.04x = 4,662.32 × 2,120.22
  4. Step 4: Simplify right side
    3,378.04x = 9,885,144.11
  5. Step 5: Solve for x
    x = 9,885,144.11/3,378.04
  6. Step 6: Final answer
    x = 2,926.30

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Half scale
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Double scale
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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.