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Finding the Fourth Proportional to 7,236.81, 10,855.08 and 2,854.31

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Solution

The fourth proportional to 7,236.81, 10,855.08 and 2,854.31 is: 4,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.81 : 10,855.08 = 2,854.31 : x
  2. Step 2: Convert to fraction form
    7,236.81/10,855.08 = 2,854.31/x
  3. Step 3: Cross multiply
    7,236.81x = 10,855.08 × 2,854.31
  4. Step 4: Simplify right side
    7,236.81x = 30,983,709.12
  5. Step 5: Solve for x
    x = 30,983,709.12/7,236.81
  6. Step 6: Final answer
    x = 4,281.40

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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.