Home / 3,143.45-4,715.18-2,220.05

Finding the Fourth Proportional to 3,143.45, 4,715.18 and 2,220.05

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Solution

The fourth proportional to 3,143.45, 4,715.18 and 2,220.05 is: 3,330.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.45 : 4,715.18 = 2,220.05 : x
  2. Step 2: Convert to fraction form
    3,143.45/4,715.18 = 2,220.05/x
  3. Step 3: Cross multiply
    3,143.45x = 4,715.18 × 2,220.05
  4. Step 4: Simplify right side
    3,143.45x = 10,467,924.26
  5. Step 5: Solve for x
    x = 10,467,924.26/3,143.45
  6. Step 6: Final answer
    x = 3,330.08

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.