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Finding the Fourth Proportional to 6,442.55, 8,888.90 and 3,924.73

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Solution

The fourth proportional to 6,442.55, 8,888.90 and 3,924.73 is: 5,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.55 : 8,888.90 = 3,924.73 : x
  2. Step 2: Convert to fraction form
    6,442.55/8,888.90 = 3,924.73/x
  3. Step 3: Cross multiply
    6,442.55x = 8,888.90 × 3,924.73
  4. Step 4: Simplify right side
    6,442.55x = 34,886,532.50
  5. Step 5: Solve for x
    x = 34,886,532.50/6,442.55
  6. Step 6: Final answer
    x = 5,415.02

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.