Home / 3,027.09-4,178.88-1,909.75

Finding the Fourth Proportional to 3,027.09, 4,178.88 and 1,909.75

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Solution

The fourth proportional to 3,027.09, 4,178.88 and 1,909.75 is: 2,636.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,027.09 : 4,178.88 = 1,909.75 : x
  2. Step 2: Convert to fraction form
    3,027.09/4,178.88 = 1,909.75/x
  3. Step 3: Cross multiply
    3,027.09x = 4,178.88 × 1,909.75
  4. Step 4: Simplify right side
    3,027.09x = 7,980,616.08
  5. Step 5: Solve for x
    x = 7,980,616.08/3,027.09
  6. Step 6: Final answer
    x = 2,636.40

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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.