Home / 8,283.95-11,436.09-6,391.28

Finding the Fourth Proportional to 8,283.95, 11,436.09 and 6,391.28

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Solution

The fourth proportional to 8,283.95, 11,436.09 and 6,391.28 is: 8,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,283.95 : 11,436.09 = 6,391.28 : x
  2. Step 2: Convert to fraction form
    8,283.95/11,436.09 = 6,391.28/x
  3. Step 3: Cross multiply
    8,283.95x = 11,436.09 × 6,391.28
  4. Step 4: Simplify right side
    8,283.95x = 73,091,257.92
  5. Step 5: Solve for x
    x = 73,091,257.92/8,283.95
  6. Step 6: Final answer
    x = 8,823.24

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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.