Home / 3,074.80-4,242.72-2,919.16

Finding the Fourth Proportional to 3,074.80, 4,242.72 and 2,919.16

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Solution

The fourth proportional to 3,074.80, 4,242.72 and 2,919.16 is: 4,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.80 : 4,242.72 = 2,919.16 : x
  2. Step 2: Convert to fraction form
    3,074.80/4,242.72 = 2,919.16/x
  3. Step 3: Cross multiply
    3,074.80x = 4,242.72 × 2,919.16
  4. Step 4: Simplify right side
    3,074.80x = 12,385,178.52
  5. Step 5: Solve for x
    x = 12,385,178.52/3,074.80
  6. Step 6: Final answer
    x = 4,027.96

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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.