Home / 8,983.20-13,474.80-7,889.70

Finding the Fourth Proportional to 8,983.20, 13,474.80 and 7,889.70

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Solution

The fourth proportional to 8,983.20, 13,474.80 and 7,889.70 is: 11,834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,983.20 : 13,474.80 = 7,889.70 : x
  2. Step 2: Convert to fraction form
    8,983.20/13,474.80 = 7,889.70/x
  3. Step 3: Cross multiply
    8,983.20x = 13,474.80 × 7,889.70
  4. Step 4: Simplify right side
    8,983.20x = 106,312,129.56
  5. Step 5: Solve for x
    x = 106,312,129.56/8,983.20
  6. Step 6: Final answer
    x = 11,834.55

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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.