Home / 4,931.16-6,811.28-3,789.90

Finding the Fourth Proportional to 4,931.16, 6,811.28 and 3,789.90

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Solution

The fourth proportional to 4,931.16, 6,811.28 and 3,789.90 is: 5,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.16 : 6,811.28 = 3,789.90 : x
  2. Step 2: Convert to fraction form
    4,931.16/6,811.28 = 3,789.90/x
  3. Step 3: Cross multiply
    4,931.16x = 6,811.28 × 3,789.90
  4. Step 4: Simplify right side
    4,931.16x = 25,814,070.07
  5. Step 5: Solve for x
    x = 25,814,070.07/4,931.16
  6. Step 6: Final answer
    x = 5,234.89

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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.