Home / 5,814.60-8,721.84-1,919.28

Finding the Fourth Proportional to 5,814.60, 8,721.84 and 1,919.28

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Solution

The fourth proportional to 5,814.60, 8,721.84 and 1,919.28 is: 2,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,814.60 : 8,721.84 = 1,919.28 : x
  2. Step 2: Convert to fraction form
    5,814.60/8,721.84 = 1,919.28/x
  3. Step 3: Cross multiply
    5,814.60x = 8,721.84 × 1,919.28
  4. Step 4: Simplify right side
    5,814.60x = 16,739,653.08
  5. Step 5: Solve for x
    x = 16,739,653.08/5,814.60
  6. Step 6: Final answer
    x = 2,878.90

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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.