Home / 1,639.80-2,459.70-1,451.48

Finding the Fourth Proportional to 1,639.80, 2,459.70 and 1,451.48

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Solution

The fourth proportional to 1,639.80, 2,459.70 and 1,451.48 is: 2,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.80 : 2,459.70 = 1,451.48 : x
  2. Step 2: Convert to fraction form
    1,639.80/2,459.70 = 1,451.48/x
  3. Step 3: Cross multiply
    1,639.80x = 2,459.70 × 1,451.48
  4. Step 4: Simplify right side
    1,639.80x = 3,570,193.06
  5. Step 5: Solve for x
    x = 3,570,193.06/1,639.80
  6. Step 6: Final answer
    x = 2,177.21

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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.