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Finding the Fourth Proportional to 8,605.04, 11,886.65 and 6,740.21

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Solution

The fourth proportional to 8,605.04, 11,886.65 and 6,740.21 is: 9,310.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.04 : 11,886.65 = 6,740.21 : x
  2. Step 2: Convert to fraction form
    8,605.04/11,886.65 = 6,740.21/x
  3. Step 3: Cross multiply
    8,605.04x = 11,886.65 × 6,740.21
  4. Step 4: Simplify right side
    8,605.04x = 80,118,538.49
  5. Step 5: Solve for x
    x = 80,118,538.49/8,605.04
  6. Step 6: Final answer
    x = 9,310.66

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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.