Home / 7,478.10-11,217.15-3,090.73

Finding the Fourth Proportional to 7,478.10, 11,217.15 and 3,090.73

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Solution

The fourth proportional to 7,478.10, 11,217.15 and 3,090.73 is: 4,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.10 : 11,217.15 = 3,090.73 : x
  2. Step 2: Convert to fraction form
    7,478.10/11,217.15 = 3,090.73/x
  3. Step 3: Cross multiply
    7,478.10x = 11,217.15 × 3,090.73
  4. Step 4: Simplify right side
    7,478.10x = 34,669,182.02
  5. Step 5: Solve for x
    x = 34,669,182.02/7,478.10
  6. Step 6: Final answer
    x = 4,636.10

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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.