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Finding the Fourth Proportional to 5,623, 8,434.50 and 1,519

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Solution

The fourth proportional to 5,623, 8,434.50 and 1,519 is: 2,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,623 : 8,434.50 = 1,519 : x
  2. Step 2: Convert to fraction form
    5,623/8,434.50 = 1,519/x
  3. Step 3: Cross multiply
    5,623x = 8,434.50 × 1,519
  4. Step 4: Simplify right side
    5,623x = 12,812,005.50
  5. Step 5: Solve for x
    x = 12,812,005.50/5,623
  6. Step 6: Final answer
    x = 2,278.50

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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.