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Finding the Fourth Proportional to 7,863.21, 11,798.87 and 7,305.53

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Solution

The fourth proportional to 7,863.21, 11,798.87 and 7,305.53 is: 10,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.21 : 11,798.87 = 7,305.53 : x
  2. Step 2: Convert to fraction form
    7,863.21/11,798.87 = 7,305.53/x
  3. Step 3: Cross multiply
    7,863.21x = 11,798.87 × 7,305.53
  4. Step 4: Simplify right side
    7,863.21x = 86,196,903.23
  5. Step 5: Solve for x
    x = 86,196,903.23/7,863.21
  6. Step 6: Final answer
    x = 10,962.05

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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.