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Finding the Fourth Proportional to 8,347.05, 12,533.94 and 7,311.87

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Solution

The fourth proportional to 8,347.05, 12,533.94 and 7,311.87 is: 10,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.05 : 12,533.94 = 7,311.87 : x
  2. Step 2: Convert to fraction form
    8,347.05/12,533.94 = 7,311.87/x
  3. Step 3: Cross multiply
    8,347.05x = 12,533.94 × 7,311.87
  4. Step 4: Simplify right side
    8,347.05x = 91,646,539.87
  5. Step 5: Solve for x
    x = 91,646,539.87/8,347.05
  6. Step 6: Final answer
    x = 10,979.51

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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.