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Finding the Fourth Proportional to 8,436.32, 12,625.28 and 5,828.16

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Solution

The fourth proportional to 8,436.32, 12,625.28 and 5,828.16 is: 8,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.32 : 12,625.28 = 5,828.16 : x
  2. Step 2: Convert to fraction form
    8,436.32/12,625.28 = 5,828.16/x
  3. Step 3: Cross multiply
    8,436.32x = 12,625.28 × 5,828.16
  4. Step 4: Simplify right side
    8,436.32x = 73,582,151.88
  5. Step 5: Solve for x
    x = 73,582,151.88/8,436.32
  6. Step 6: Final answer
    x = 8,722.07

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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.