Home / 7,477.78-11,216.10-4,211.32

Finding the Fourth Proportional to 7,477.78, 11,216.10 and 4,211.32

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Solution

The fourth proportional to 7,477.78, 11,216.10 and 4,211.32 is: 6,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.78 : 11,216.10 = 4,211.32 : x
  2. Step 2: Convert to fraction form
    7,477.78/11,216.10 = 4,211.32/x
  3. Step 3: Cross multiply
    7,477.78x = 11,216.10 × 4,211.32
  4. Step 4: Simplify right side
    7,477.78x = 47,234,586.25
  5. Step 5: Solve for x
    x = 47,234,586.25/7,477.78
  6. Step 6: Final answer
    x = 6,316.66

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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.