Home / 7,431.21-10,247.72-6,815.81

Finding the Fourth Proportional to 7,431.21, 10,247.72 and 6,815.81

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Solution

The fourth proportional to 7,431.21, 10,247.72 and 6,815.81 is: 9,399.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.21 : 10,247.72 = 6,815.81 : x
  2. Step 2: Convert to fraction form
    7,431.21/10,247.72 = 6,815.81/x
  3. Step 3: Cross multiply
    7,431.21x = 10,247.72 × 6,815.81
  4. Step 4: Simplify right side
    7,431.21x = 69,846,503.99
  5. Step 5: Solve for x
    x = 69,846,503.99/7,431.21
  6. Step 6: Final answer
    x = 9,399.08

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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.