Home / 5,191.45-7,785.96-1,902.76

Finding the Fourth Proportional to 5,191.45, 7,785.96 and 1,902.76

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Solution

The fourth proportional to 5,191.45, 7,785.96 and 1,902.76 is: 2,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.45 : 7,785.96 = 1,902.76 : x
  2. Step 2: Convert to fraction form
    5,191.45/7,785.96 = 1,902.76/x
  3. Step 3: Cross multiply
    5,191.45x = 7,785.96 × 1,902.76
  4. Step 4: Simplify right side
    5,191.45x = 14,814,813.25
  5. Step 5: Solve for x
    x = 14,814,813.25/5,191.45
  6. Step 6: Final answer
    x = 2,853.69

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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.