Home / 7,453.60-11,179.68-1,981.60

Finding the Fourth Proportional to 7,453.60, 11,179.68 and 1,981.60

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Solution

The fourth proportional to 7,453.60, 11,179.68 and 1,981.60 is: 2,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,453.60 : 11,179.68 = 1,981.60 : x
  2. Step 2: Convert to fraction form
    7,453.60/11,179.68 = 1,981.60/x
  3. Step 3: Cross multiply
    7,453.60x = 11,179.68 × 1,981.60
  4. Step 4: Simplify right side
    7,453.60x = 22,153,653.89
  5. Step 5: Solve for x
    x = 22,153,653.89/7,453.60
  6. Step 6: Final answer
    x = 2,972.21

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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.