Home / 1,459.43-2,198.90-1,320.80

Finding the Fourth Proportional to 1,459.43, 2,198.90 and 1,320.80

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Solution

The fourth proportional to 1,459.43, 2,198.90 and 1,320.80 is: 1,990.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.43 : 2,198.90 = 1,320.80 : x
  2. Step 2: Convert to fraction form
    1,459.43/2,198.90 = 1,320.80/x
  3. Step 3: Cross multiply
    1,459.43x = 2,198.90 × 1,320.80
  4. Step 4: Simplify right side
    1,459.43x = 2,904,303.75
  5. Step 5: Solve for x
    x = 2,904,303.75/1,459.43
  6. Step 6: Final answer
    x = 1,990.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.