Home / 7,323.40-10,981.86-2,129.68

Finding the Fourth Proportional to 7,323.40, 10,981.86 and 2,129.68

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Solution

The fourth proportional to 7,323.40, 10,981.86 and 2,129.68 is: 3,193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.40 : 10,981.86 = 2,129.68 : x
  2. Step 2: Convert to fraction form
    7,323.40/10,981.86 = 2,129.68/x
  3. Step 3: Cross multiply
    7,323.40x = 10,981.86 × 2,129.68
  4. Step 4: Simplify right side
    7,323.40x = 23,387,847.60
  5. Step 5: Solve for x
    x = 23,387,847.60/7,323.40
  6. Step 6: Final answer
    x = 3,193.58

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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.