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Finding the Fourth Proportional to 9,236, 12,746.22 and 5,257.28

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Solution

The fourth proportional to 9,236, 12,746.22 and 5,257.28 is: 7,255.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,236 : 12,746.22 = 5,257.28 : x
  2. Step 2: Convert to fraction form
    9,236/12,746.22 = 5,257.28/x
  3. Step 3: Cross multiply
    9,236x = 12,746.22 × 5,257.28
  4. Step 4: Simplify right side
    9,236x = 67,010,447.48
  5. Step 5: Solve for x
    x = 67,010,447.48/9,236
  6. Step 6: Final answer
    x = 7,255.35

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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.