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Finding the Fourth Proportional to 9,278.08, 12,804.08 and 6,631.81

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Solution

The fourth proportional to 9,278.08, 12,804.08 and 6,631.81 is: 9,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.08 : 12,804.08 = 6,631.81 : x
  2. Step 2: Convert to fraction form
    9,278.08/12,804.08 = 6,631.81/x
  3. Step 3: Cross multiply
    9,278.08x = 12,804.08 × 6,631.81
  4. Step 4: Simplify right side
    9,278.08x = 84,914,160.62
  5. Step 5: Solve for x
    x = 84,914,160.62/9,278.08
  6. Step 6: Final answer
    x = 9,152.13

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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.