Home / 3,931.72-5,896.38-3,315.64

Finding the Fourth Proportional to 3,931.72, 5,896.38 and 3,315.64

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Solution

The fourth proportional to 3,931.72, 5,896.38 and 3,315.64 is: 4,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.72 : 5,896.38 = 3,315.64 : x
  2. Step 2: Convert to fraction form
    3,931.72/5,896.38 = 3,315.64/x
  3. Step 3: Cross multiply
    3,931.72x = 5,896.38 × 3,315.64
  4. Step 4: Simplify right side
    3,931.72x = 19,550,273.38
  5. Step 5: Solve for x
    x = 19,550,273.38/3,931.72
  6. Step 6: Final answer
    x = 4,972.45

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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.