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Finding the Fourth Proportional to 3,953.61, 5,931.86 and 2,004.21

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Solution

The fourth proportional to 3,953.61, 5,931.86 and 2,004.21 is: 3,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.61 : 5,931.86 = 2,004.21 : x
  2. Step 2: Convert to fraction form
    3,953.61/5,931.86 = 2,004.21/x
  3. Step 3: Cross multiply
    3,953.61x = 5,931.86 × 2,004.21
  4. Step 4: Simplify right side
    3,953.61x = 11,888,683.11
  5. Step 5: Solve for x
    x = 11,888,683.11/3,953.61
  6. Step 6: Final answer
    x = 3,007.04

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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.