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Finding the Fourth Proportional to 8,591.06, 12,945.12 and 7,065.24

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Solution

The fourth proportional to 8,591.06, 12,945.12 and 7,065.24 is: 10,645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.06 : 12,945.12 = 7,065.24 : x
  2. Step 2: Convert to fraction form
    8,591.06/12,945.12 = 7,065.24/x
  3. Step 3: Cross multiply
    8,591.06x = 12,945.12 × 7,065.24
  4. Step 4: Simplify right side
    8,591.06x = 91,460,379.63
  5. Step 5: Solve for x
    x = 91,460,379.63/8,591.06
  6. Step 6: Final answer
    x = 10,645.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.