Home / 3,403.80-4,697.09-1,911.69

Finding the Fourth Proportional to 3,403.80, 4,697.09 and 1,911.69

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Solution

The fourth proportional to 3,403.80, 4,697.09 and 1,911.69 is: 2,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.80 : 4,697.09 = 1,911.69 : x
  2. Step 2: Convert to fraction form
    3,403.80/4,697.09 = 1,911.69/x
  3. Step 3: Cross multiply
    3,403.80x = 4,697.09 × 1,911.69
  4. Step 4: Simplify right side
    3,403.80x = 8,979,379.98
  5. Step 5: Solve for x
    x = 8,979,379.98/3,403.80
  6. Step 6: Final answer
    x = 2,638.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.