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Finding the Fourth Proportional to 9,347.06, 12,916.05 and 8,891.48

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Solution

The fourth proportional to 9,347.06, 12,916.05 and 8,891.48 is: 12,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.06 : 12,916.05 = 8,891.48 : x
  2. Step 2: Convert to fraction form
    9,347.06/12,916.05 = 8,891.48/x
  3. Step 3: Cross multiply
    9,347.06x = 12,916.05 × 8,891.48
  4. Step 4: Simplify right side
    9,347.06x = 114,842,800.25
  5. Step 5: Solve for x
    x = 114,842,800.25/9,347.06
  6. Step 6: Final answer
    x = 12,286.52

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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.