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Finding the Fourth Proportional to 8,562.36, 11,785.80 and 8,230.32

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Solution

The fourth proportional to 8,562.36, 11,785.80 and 8,230.32 is: 11,328.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.36 : 11,785.80 = 8,230.32 : x
  2. Step 2: Convert to fraction form
    8,562.36/11,785.80 = 8,230.32/x
  3. Step 3: Cross multiply
    8,562.36x = 11,785.80 × 8,230.32
  4. Step 4: Simplify right side
    8,562.36x = 97,000,905.46
  5. Step 5: Solve for x
    x = 97,000,905.46/8,562.36
  6. Step 6: Final answer
    x = 11,328.76

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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.