Home / 8,436.61-11,638.60-5,453.39

Finding the Fourth Proportional to 8,436.61, 11,638.60 and 5,453.39

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Solution

The fourth proportional to 8,436.61, 11,638.60 and 5,453.39 is: 7,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.61 : 11,638.60 = 5,453.39 : x
  2. Step 2: Convert to fraction form
    8,436.61/11,638.60 = 5,453.39/x
  3. Step 3: Cross multiply
    8,436.61x = 11,638.60 × 5,453.39
  4. Step 4: Simplify right side
    8,436.61x = 63,469,870.99
  5. Step 5: Solve for x
    x = 63,469,870.99/8,436.61
  6. Step 6: Final answer
    x = 7,523.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.