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Finding the Fourth Proportional to 7,813.11, 10,782.11 and 4,276.32

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Solution

The fourth proportional to 7,813.11, 10,782.11 and 4,276.32 is: 5,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.11 : 10,782.11 = 4,276.32 : x
  2. Step 2: Convert to fraction form
    7,813.11/10,782.11 = 4,276.32/x
  3. Step 3: Cross multiply
    7,813.11x = 10,782.11 × 4,276.32
  4. Step 4: Simplify right side
    7,813.11x = 46,107,752.64
  5. Step 5: Solve for x
    x = 46,107,752.64/7,813.11
  6. Step 6: Final answer
    x = 5,901.33

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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.