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Finding the Fourth Proportional to 8,951.99, 13,428.99 and 2,947.86

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Solution

The fourth proportional to 8,951.99, 13,428.99 and 2,947.86 is: 4,422.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.99 : 13,428.99 = 2,947.86 : x
  2. Step 2: Convert to fraction form
    8,951.99/13,428.99 = 2,947.86/x
  3. Step 3: Cross multiply
    8,951.99x = 13,428.99 × 2,947.86
  4. Step 4: Simplify right side
    8,951.99x = 39,586,782.46
  5. Step 5: Solve for x
    x = 39,586,782.46/8,951.99
  6. Step 6: Final answer
    x = 4,422.12

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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.