Home / 7,686.30-11,529.45-4,405.80

Finding the Fourth Proportional to 7,686.30, 11,529.45 and 4,405.80

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Solution

The fourth proportional to 7,686.30, 11,529.45 and 4,405.80 is: 6,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.30 : 11,529.45 = 4,405.80 : x
  2. Step 2: Convert to fraction form
    7,686.30/11,529.45 = 4,405.80/x
  3. Step 3: Cross multiply
    7,686.30x = 11,529.45 × 4,405.80
  4. Step 4: Simplify right side
    7,686.30x = 50,796,450.81
  5. Step 5: Solve for x
    x = 50,796,450.81/7,686.30
  6. Step 6: Final answer
    x = 6,608.70

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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.