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Finding the Fourth Proportional to 6,790.80, 9,379.08 and 5,410.56

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Solution

The fourth proportional to 6,790.80, 9,379.08 and 5,410.56 is: 7,472.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.80 : 9,379.08 = 5,410.56 : x
  2. Step 2: Convert to fraction form
    6,790.80/9,379.08 = 5,410.56/x
  3. Step 3: Cross multiply
    6,790.80x = 9,379.08 × 5,410.56
  4. Step 4: Simplify right side
    6,790.80x = 50,746,075.08
  5. Step 5: Solve for x
    x = 50,746,075.08/6,790.80
  6. Step 6: Final answer
    x = 7,472.77

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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.