Home / 9,821.12-14,731.68-3,977.76

Finding the Fourth Proportional to 9,821.12, 14,731.68 and 3,977.76

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Solution

The fourth proportional to 9,821.12, 14,731.68 and 3,977.76 is: 5,966.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,821.12 : 14,731.68 = 3,977.76 : x
  2. Step 2: Convert to fraction form
    9,821.12/14,731.68 = 3,977.76/x
  3. Step 3: Cross multiply
    9,821.12x = 14,731.68 × 3,977.76
  4. Step 4: Simplify right side
    9,821.12x = 58,599,087.44
  5. Step 5: Solve for x
    x = 58,599,087.44/9,821.12
  6. Step 6: Final answer
    x = 5,966.64

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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.