Home / 6,815.40-9,405.54-4,162.20

Finding the Fourth Proportional to 6,815.40, 9,405.54 and 4,162.20

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Solution

The fourth proportional to 6,815.40, 9,405.54 and 4,162.20 is: 5,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.40 : 9,405.54 = 4,162.20 : x
  2. Step 2: Convert to fraction form
    6,815.40/9,405.54 = 4,162.20/x
  3. Step 3: Cross multiply
    6,815.40x = 9,405.54 × 4,162.20
  4. Step 4: Simplify right side
    6,815.40x = 39,147,738.59
  5. Step 5: Solve for x
    x = 39,147,738.59/6,815.40
  6. Step 6: Final answer
    x = 5,744.01

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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.