Home / 3,172.90-4,381.29-1,994.35

Finding the Fourth Proportional to 3,172.90, 4,381.29 and 1,994.35

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Solution

The fourth proportional to 3,172.90, 4,381.29 and 1,994.35 is: 2,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.90 : 4,381.29 = 1,994.35 : x
  2. Step 2: Convert to fraction form
    3,172.90/4,381.29 = 1,994.35/x
  3. Step 3: Cross multiply
    3,172.90x = 4,381.29 × 1,994.35
  4. Step 4: Simplify right side
    3,172.90x = 8,737,825.71
  5. Step 5: Solve for x
    x = 8,737,825.71/3,172.90
  6. Step 6: Final answer
    x = 2,753.89

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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.