Home / 7,821.47-11,732.21-2,630.99

Finding the Fourth Proportional to 7,821.47, 11,732.21 and 2,630.99

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Solution

The fourth proportional to 7,821.47, 11,732.21 and 2,630.99 is: 3,946.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.47 : 11,732.21 = 2,630.99 : x
  2. Step 2: Convert to fraction form
    7,821.47/11,732.21 = 2,630.99/x
  3. Step 3: Cross multiply
    7,821.47x = 11,732.21 × 2,630.99
  4. Step 4: Simplify right side
    7,821.47x = 30,867,353.23
  5. Step 5: Solve for x
    x = 30,867,353.23/7,821.47
  6. Step 6: Final answer
    x = 3,946.49

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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.