Home / 3,478.40-5,217.60-3,300.20

Finding the Fourth Proportional to 3,478.40, 5,217.60 and 3,300.20

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Solution

The fourth proportional to 3,478.40, 5,217.60 and 3,300.20 is: 4,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.40 : 5,217.60 = 3,300.20 : x
  2. Step 2: Convert to fraction form
    3,478.40/5,217.60 = 3,300.20/x
  3. Step 3: Cross multiply
    3,478.40x = 5,217.60 × 3,300.20
  4. Step 4: Simplify right side
    3,478.40x = 17,219,123.52
  5. Step 5: Solve for x
    x = 17,219,123.52/3,478.40
  6. Step 6: Final answer
    x = 4,950.30

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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.