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Finding the Fourth Proportional to 8,402.99, 12,605.18 and 2,559.65

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Solution

The fourth proportional to 8,402.99, 12,605.18 and 2,559.65 is: 3,839.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.99 : 12,605.18 = 2,559.65 : x
  2. Step 2: Convert to fraction form
    8,402.99/12,605.18 = 2,559.65/x
  3. Step 3: Cross multiply
    8,402.99x = 12,605.18 × 2,559.65
  4. Step 4: Simplify right side
    8,402.99x = 32,264,848.99
  5. Step 5: Solve for x
    x = 32,264,848.99/8,402.99
  6. Step 6: Final answer
    x = 3,839.69

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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.