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Finding the Fourth Proportional to 11,491.09, 15,863.75 and 7,734.01

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Solution

The fourth proportional to 11,491.09, 15,863.75 and 7,734.01 is: 10,677.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.09 : 15,863.75 = 7,734.01 : x
  2. Step 2: Convert to fraction form
    11,491.09/15,863.75 = 7,734.01/x
  3. Step 3: Cross multiply
    11,491.09x = 15,863.75 × 7,734.01
  4. Step 4: Simplify right side
    11,491.09x = 122,690,283.15
  5. Step 5: Solve for x
    x = 122,690,283.15/11,491.09
  6. Step 6: Final answer
    x = 10,677.00

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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.