Home / 8,631.36-12,947.02-3,436

Finding the Fourth Proportional to 8,631.36, 12,947.02 and 3,436

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Solution

The fourth proportional to 8,631.36, 12,947.02 and 3,436 is: 5,153.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.36 : 12,947.02 = 3,436 : x
  2. Step 2: Convert to fraction form
    8,631.36/12,947.02 = 3,436/x
  3. Step 3: Cross multiply
    8,631.36x = 12,947.02 × 3,436
  4. Step 4: Simplify right side
    8,631.36x = 44,485,960.72
  5. Step 5: Solve for x
    x = 44,485,960.72/8,631.36
  6. Step 6: Final answer
    x = 5,153.99

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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.