Home / 3,871.04-5,342.20-2,378.66

Finding the Fourth Proportional to 3,871.04, 5,342.20 and 2,378.66

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Solution

The fourth proportional to 3,871.04, 5,342.20 and 2,378.66 is: 3,282.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.04 : 5,342.20 = 2,378.66 : x
  2. Step 2: Convert to fraction form
    3,871.04/5,342.20 = 2,378.66/x
  3. Step 3: Cross multiply
    3,871.04x = 5,342.20 × 2,378.66
  4. Step 4: Simplify right side
    3,871.04x = 12,707,277.45
  5. Step 5: Solve for x
    x = 12,707,277.45/3,871.04
  6. Step 6: Final answer
    x = 3,282.65

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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.