Home / 7,998.40-11,983.20-4,916.80

Finding the Fourth Proportional to 7,998.40, 11,983.20 and 4,916.80

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Solution

The fourth proportional to 7,998.40, 11,983.20 and 4,916.80 is: 7,366.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.40 : 11,983.20 = 4,916.80 : x
  2. Step 2: Convert to fraction form
    7,998.40/11,983.20 = 4,916.80/x
  3. Step 3: Cross multiply
    7,998.40x = 11,983.20 × 4,916.80
  4. Step 4: Simplify right side
    7,998.40x = 58,918,997.76
  5. Step 5: Solve for x
    x = 58,918,997.76/7,998.40
  6. Step 6: Final answer
    x = 7,366.35

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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.