Home / 5,440.64-8,161.92-1,931.72

Finding the Fourth Proportional to 5,440.64, 8,161.92 and 1,931.72

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Solution

The fourth proportional to 5,440.64, 8,161.92 and 1,931.72 is: 2,897.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.64 : 8,161.92 = 1,931.72 : x
  2. Step 2: Convert to fraction form
    5,440.64/8,161.92 = 1,931.72/x
  3. Step 3: Cross multiply
    5,440.64x = 8,161.92 × 1,931.72
  4. Step 4: Simplify right side
    5,440.64x = 15,766,544.10
  5. Step 5: Solve for x
    x = 15,766,544.10/5,440.64
  6. Step 6: Final answer
    x = 2,897.92

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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.