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Finding the Fourth Proportional to 8,990.11, 12,412.11 and 5,804.83

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Solution

The fourth proportional to 8,990.11, 12,412.11 and 5,804.83 is: 8,014.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.11 : 12,412.11 = 5,804.83 : x
  2. Step 2: Convert to fraction form
    8,990.11/12,412.11 = 5,804.83/x
  3. Step 3: Cross multiply
    8,990.11x = 12,412.11 × 5,804.83
  4. Step 4: Simplify right side
    8,990.11x = 72,050,126.43
  5. Step 5: Solve for x
    x = 72,050,126.43/8,990.11
  6. Step 6: Final answer
    x = 8,014.38

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Half scale
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Double scale
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Similar ratio
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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.