Home / 6,438.20-9,657.48-2,277.62

Finding the Fourth Proportional to 6,438.20, 9,657.48 and 2,277.62

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Solution

The fourth proportional to 6,438.20, 9,657.48 and 2,277.62 is: 3,416.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.20 : 9,657.48 = 2,277.62 : x
  2. Step 2: Convert to fraction form
    6,438.20/9,657.48 = 2,277.62/x
  3. Step 3: Cross multiply
    6,438.20x = 9,657.48 × 2,277.62
  4. Step 4: Simplify right side
    6,438.20x = 21,996,069.60
  5. Step 5: Solve for x
    x = 21,996,069.60/6,438.20
  6. Step 6: Final answer
    x = 3,416.49

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Half scale
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Double scale
Find fourth proportional to 6,439.20, 9,658.98 and 2,278.62
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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.