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Finding the Fourth Proportional to 7,011.81, 9,676.29 and 3,867.99

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Solution

The fourth proportional to 7,011.81, 9,676.29 and 3,867.99 is: 5,337.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.81 : 9,676.29 = 3,867.99 : x
  2. Step 2: Convert to fraction form
    7,011.81/9,676.29 = 3,867.99/x
  3. Step 3: Cross multiply
    7,011.81x = 9,676.29 × 3,867.99
  4. Step 4: Simplify right side
    7,011.81x = 37,427,792.96
  5. Step 5: Solve for x
    x = 37,427,792.96/7,011.81
  6. Step 6: Final answer
    x = 5,337.83

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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.