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Finding the Fourth Proportional to 8,570.18, 12,850.09 and 5,605.05

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Solution

The fourth proportional to 8,570.18, 12,850.09 and 5,605.05 is: 8,404.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.18 : 12,850.09 = 5,605.05 : x
  2. Step 2: Convert to fraction form
    8,570.18/12,850.09 = 5,605.05/x
  3. Step 3: Cross multiply
    8,570.18x = 12,850.09 × 5,605.05
  4. Step 4: Simplify right side
    8,570.18x = 72,025,431.13
  5. Step 5: Solve for x
    x = 72,025,431.13/8,570.18
  6. Step 6: Final answer
    x = 8,404.19

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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.