Home / 3,119.81-4,305.96-2,870.73

Finding the Fourth Proportional to 3,119.81, 4,305.96 and 2,870.73

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Solution

The fourth proportional to 3,119.81, 4,305.96 and 2,870.73 is: 3,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.81 : 4,305.96 = 2,870.73 : x
  2. Step 2: Convert to fraction form
    3,119.81/4,305.96 = 2,870.73/x
  3. Step 3: Cross multiply
    3,119.81x = 4,305.96 × 2,870.73
  4. Step 4: Simplify right side
    3,119.81x = 12,361,248.55
  5. Step 5: Solve for x
    x = 12,361,248.55/3,119.81
  6. Step 6: Final answer
    x = 3,962.19

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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.