Home / 7,327.44-10,989.72-1,990.56

Finding the Fourth Proportional to 7,327.44, 10,989.72 and 1,990.56

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Solution

The fourth proportional to 7,327.44, 10,989.72 and 1,990.56 is: 2,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,327.44 : 10,989.72 = 1,990.56 : x
  2. Step 2: Convert to fraction form
    7,327.44/10,989.72 = 1,990.56/x
  3. Step 3: Cross multiply
    7,327.44x = 10,989.72 × 1,990.56
  4. Step 4: Simplify right side
    7,327.44x = 21,875,697.04
  5. Step 5: Solve for x
    x = 21,875,697.04/7,327.44
  6. Step 6: Final answer
    x = 2,985.45

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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.