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Finding the Fourth Proportional to 7,903.86, 11,855.79 and 2,357.19

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Solution

The fourth proportional to 7,903.86, 11,855.79 and 2,357.19 is: 3,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.86 : 11,855.79 = 2,357.19 : x
  2. Step 2: Convert to fraction form
    7,903.86/11,855.79 = 2,357.19/x
  3. Step 3: Cross multiply
    7,903.86x = 11,855.79 × 2,357.19
  4. Step 4: Simplify right side
    7,903.86x = 27,946,349.63
  5. Step 5: Solve for x
    x = 27,946,349.63/7,903.86
  6. Step 6: Final answer
    x = 3,535.79

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Similar ratio
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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.