Home / 5,318.60-7,977.90-1,855.04

Finding the Fourth Proportional to 5,318.60, 7,977.90 and 1,855.04

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Solution

The fourth proportional to 5,318.60, 7,977.90 and 1,855.04 is: 2,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.60 : 7,977.90 = 1,855.04 : x
  2. Step 2: Convert to fraction form
    5,318.60/7,977.90 = 1,855.04/x
  3. Step 3: Cross multiply
    5,318.60x = 7,977.90 × 1,855.04
  4. Step 4: Simplify right side
    5,318.60x = 14,799,323.62
  5. Step 5: Solve for x
    x = 14,799,323.62/5,318.60
  6. Step 6: Final answer
    x = 2,782.56

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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.