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Finding the Fourth Proportional to 7,855.02, 10,839.53 and 4,318.16

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Solution

The fourth proportional to 7,855.02, 10,839.53 and 4,318.16 is: 5,958.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.02 : 10,839.53 = 4,318.16 : x
  2. Step 2: Convert to fraction form
    7,855.02/10,839.53 = 4,318.16/x
  3. Step 3: Cross multiply
    7,855.02x = 10,839.53 × 4,318.16
  4. Step 4: Simplify right side
    7,855.02x = 46,806,749.08
  5. Step 5: Solve for x
    x = 46,806,749.08/7,855.02
  6. Step 6: Final answer
    x = 5,958.83

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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.