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Finding the Fourth Proportional to 10,660.59, 15,990.75 and 4,813.11

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Solution

The fourth proportional to 10,660.59, 15,990.75 and 4,813.11 is: 7,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.59 : 15,990.75 = 4,813.11 : x
  2. Step 2: Convert to fraction form
    10,660.59/15,990.75 = 4,813.11/x
  3. Step 3: Cross multiply
    10,660.59x = 15,990.75 × 4,813.11
  4. Step 4: Simplify right side
    10,660.59x = 76,965,238.73
  5. Step 5: Solve for x
    x = 76,965,238.73/10,660.59
  6. Step 6: Final answer
    x = 7,219.60

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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.