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Finding the Fourth Proportional to 8,642.22, 12,961.77 and 2,402.65

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Solution

The fourth proportional to 8,642.22, 12,961.77 and 2,402.65 is: 3,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.22 : 12,961.77 = 2,402.65 : x
  2. Step 2: Convert to fraction form
    8,642.22/12,961.77 = 2,402.65/x
  3. Step 3: Cross multiply
    8,642.22x = 12,961.77 × 2,402.65
  4. Step 4: Simplify right side
    8,642.22x = 31,142,596.69
  5. Step 5: Solve for x
    x = 31,142,596.69/8,642.22
  6. Step 6: Final answer
    x = 3,603.54

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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.