Home / 6,419.70-9,629.39-1,675.78

Finding the Fourth Proportional to 6,419.70, 9,629.39 and 1,675.78

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Solution

The fourth proportional to 6,419.70, 9,629.39 and 1,675.78 is: 2,513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.70 : 9,629.39 = 1,675.78 : x
  2. Step 2: Convert to fraction form
    6,419.70/9,629.39 = 1,675.78/x
  3. Step 3: Cross multiply
    6,419.70x = 9,629.39 × 1,675.78
  4. Step 4: Simplify right side
    6,419.70x = 16,136,739.17
  5. Step 5: Solve for x
    x = 16,136,739.17/6,419.70
  6. Step 6: Final answer
    x = 2,513.63

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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.