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Finding the Fourth Proportional to 4,909.75, 6,776.73 and 2,919.92

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Solution

The fourth proportional to 4,909.75, 6,776.73 and 2,919.92 is: 4,030.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.75 : 6,776.73 = 2,919.92 : x
  2. Step 2: Convert to fraction form
    4,909.75/6,776.73 = 2,919.92/x
  3. Step 3: Cross multiply
    4,909.75x = 6,776.73 × 2,919.92
  4. Step 4: Simplify right side
    4,909.75x = 19,787,475.58
  5. Step 5: Solve for x
    x = 19,787,475.58/4,909.75
  6. Step 6: Final answer
    x = 4,030.24

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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.