Home / 5,319.41-7,977.42-1,808.79

Finding the Fourth Proportional to 5,319.41, 7,977.42 and 1,808.79

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Solution

The fourth proportional to 5,319.41, 7,977.42 and 1,808.79 is: 2,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.41 : 7,977.42 = 1,808.79 : x
  2. Step 2: Convert to fraction form
    5,319.41/7,977.42 = 1,808.79/x
  3. Step 3: Cross multiply
    5,319.41x = 7,977.42 × 1,808.79
  4. Step 4: Simplify right side
    5,319.41x = 14,429,447.61
  5. Step 5: Solve for x
    x = 14,429,447.61/5,319.41
  6. Step 6: Final answer
    x = 2,712.61

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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.