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Finding the Fourth Proportional to 11,660.79, 17,491.12 and 2,895.70

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Solution

The fourth proportional to 11,660.79, 17,491.12 and 2,895.70 is: 4,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,660.79 : 17,491.12 = 2,895.70 : x
  2. Step 2: Convert to fraction form
    11,660.79/17,491.12 = 2,895.70/x
  3. Step 3: Cross multiply
    11,660.79x = 17,491.12 × 2,895.70
  4. Step 4: Simplify right side
    11,660.79x = 50,649,036.18
  5. Step 5: Solve for x
    x = 50,649,036.18/11,660.79
  6. Step 6: Final answer
    x = 4,343.53

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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.