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Finding the Fourth Proportional to 8,669.63, 11,969.88 and 5,841.21

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Solution

The fourth proportional to 8,669.63, 11,969.88 and 5,841.21 is: 8,064.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.63 : 11,969.88 = 5,841.21 : x
  2. Step 2: Convert to fraction form
    8,669.63/11,969.88 = 5,841.21/x
  3. Step 3: Cross multiply
    8,669.63x = 11,969.88 × 5,841.21
  4. Step 4: Simplify right side
    8,669.63x = 69,918,605.74
  5. Step 5: Solve for x
    x = 69,918,605.74/8,669.63
  6. Step 6: Final answer
    x = 8,064.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.