Home / 5,251.39-7,878.12-1,503.21

Finding the Fourth Proportional to 5,251.39, 7,878.12 and 1,503.21

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Solution

The fourth proportional to 5,251.39, 7,878.12 and 1,503.21 is: 2,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.39 : 7,878.12 = 1,503.21 : x
  2. Step 2: Convert to fraction form
    5,251.39/7,878.12 = 1,503.21/x
  3. Step 3: Cross multiply
    5,251.39x = 7,878.12 × 1,503.21
  4. Step 4: Simplify right side
    5,251.39x = 11,842,429.37
  5. Step 5: Solve for x
    x = 11,842,429.37/5,251.39
  6. Step 6: Final answer
    x = 2,255.10

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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.