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Finding the Fourth Proportional to 8,605.98, 12,913.68 and 3,341.20

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Solution

The fourth proportional to 8,605.98, 12,913.68 and 3,341.20 is: 5,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.98 : 12,913.68 = 3,341.20 : x
  2. Step 2: Convert to fraction form
    8,605.98/12,913.68 = 3,341.20/x
  3. Step 3: Cross multiply
    8,605.98x = 12,913.68 × 3,341.20
  4. Step 4: Simplify right side
    8,605.98x = 43,147,187.62
  5. Step 5: Solve for x
    x = 43,147,187.62/8,605.98
  6. Step 6: Final answer
    x = 5,013.63

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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.