Home / 7,154.38-10,728.87-3,455.38

Finding the Fourth Proportional to 7,154.38, 10,728.87 and 3,455.38

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Solution

The fourth proportional to 7,154.38, 10,728.87 and 3,455.38 is: 5,181.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,154.38 : 10,728.87 = 3,455.38 : x
  2. Step 2: Convert to fraction form
    7,154.38/10,728.87 = 3,455.38/x
  3. Step 3: Cross multiply
    7,154.38x = 10,728.87 × 3,455.38
  4. Step 4: Simplify right side
    7,154.38x = 37,072,322.82
  5. Step 5: Solve for x
    x = 37,072,322.82/7,154.38
  6. Step 6: Final answer
    x = 5,181.77

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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.