Home / 4,815.28-7,221.12-1,894

Finding the Fourth Proportional to 4,815.28, 7,221.12 and 1,894

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Solution

The fourth proportional to 4,815.28, 7,221.12 and 1,894 is: 2,840.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.28 : 7,221.12 = 1,894 : x
  2. Step 2: Convert to fraction form
    4,815.28/7,221.12 = 1,894/x
  3. Step 3: Cross multiply
    4,815.28x = 7,221.12 × 1,894
  4. Step 4: Simplify right side
    4,815.28x = 13,676,801.28
  5. Step 5: Solve for x
    x = 13,676,801.28/4,815.28
  6. Step 6: Final answer
    x = 2,840.29

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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.