Home / 6,811.80-10,205.55-6,405.18

Finding the Fourth Proportional to 6,811.80, 10,205.55 and 6,405.18

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Solution

The fourth proportional to 6,811.80, 10,205.55 and 6,405.18 is: 9,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.80 : 10,205.55 = 6,405.18 : x
  2. Step 2: Convert to fraction form
    6,811.80/10,205.55 = 6,405.18/x
  3. Step 3: Cross multiply
    6,811.80x = 10,205.55 × 6,405.18
  4. Step 4: Simplify right side
    6,811.80x = 65,368,384.75
  5. Step 5: Solve for x
    x = 65,368,384.75/6,811.80
  6. Step 6: Final answer
    x = 9,596.35

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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.