Home / 5,218.26-7,829.10-1,931.61

Finding the Fourth Proportional to 5,218.26, 7,829.10 and 1,931.61

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Solution

The fourth proportional to 5,218.26, 7,829.10 and 1,931.61 is: 2,898.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.26 : 7,829.10 = 1,931.61 : x
  2. Step 2: Convert to fraction form
    5,218.26/7,829.10 = 1,931.61/x
  3. Step 3: Cross multiply
    5,218.26x = 7,829.10 × 1,931.61
  4. Step 4: Simplify right side
    5,218.26x = 15,122,767.85
  5. Step 5: Solve for x
    x = 15,122,767.85/5,218.26
  6. Step 6: Final answer
    x = 2,898.05

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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.