Home / 8,487.06-12,718.92-6,405.36

Finding the Fourth Proportional to 8,487.06, 12,718.92 and 6,405.36

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Solution

The fourth proportional to 8,487.06, 12,718.92 and 6,405.36 is: 9,599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.06 : 12,718.92 = 6,405.36 : x
  2. Step 2: Convert to fraction form
    8,487.06/12,718.92 = 6,405.36/x
  3. Step 3: Cross multiply
    8,487.06x = 12,718.92 × 6,405.36
  4. Step 4: Simplify right side
    8,487.06x = 81,469,261.41
  5. Step 5: Solve for x
    x = 81,469,261.41/8,487.06
  6. Step 6: Final answer
    x = 9,599.23

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1.5x scale

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.