Home / 1,989.06-2,983.62-1,666.68

Finding the Fourth Proportional to 1,989.06, 2,983.62 and 1,666.68

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Solution

The fourth proportional to 1,989.06, 2,983.62 and 1,666.68 is: 2,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.06 : 2,983.62 = 1,666.68 : x
  2. Step 2: Convert to fraction form
    1,989.06/2,983.62 = 1,666.68/x
  3. Step 3: Cross multiply
    1,989.06x = 2,983.62 × 1,666.68
  4. Step 4: Simplify right side
    1,989.06x = 4,972,739.78
  5. Step 5: Solve for x
    x = 4,972,739.78/1,989.06
  6. Step 6: Final answer
    x = 2,500.05

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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.