Home / 3,429.81-4,731.40-2,168.74

Finding the Fourth Proportional to 3,429.81, 4,731.40 and 2,168.74

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Solution

The fourth proportional to 3,429.81, 4,731.40 and 2,168.74 is: 2,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.81 : 4,731.40 = 2,168.74 : x
  2. Step 2: Convert to fraction form
    3,429.81/4,731.40 = 2,168.74/x
  3. Step 3: Cross multiply
    3,429.81x = 4,731.40 × 2,168.74
  4. Step 4: Simplify right side
    3,429.81x = 10,261,153.76
  5. Step 5: Solve for x
    x = 10,261,153.76/3,429.81
  6. Step 6: Final answer
    x = 2,991.76

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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.