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Finding the Fourth Proportional to 7,813.70, 10,782.84 and 4,276.96

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Solution

The fourth proportional to 7,813.70, 10,782.84 and 4,276.96 is: 5,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.70 : 10,782.84 = 4,276.96 : x
  2. Step 2: Convert to fraction form
    7,813.70/10,782.84 = 4,276.96/x
  3. Step 3: Cross multiply
    7,813.70x = 10,782.84 × 4,276.96
  4. Step 4: Simplify right side
    7,813.70x = 46,117,775.37
  5. Step 5: Solve for x
    x = 46,117,775.37/7,813.70
  6. Step 6: Final answer
    x = 5,902.17

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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.