Home / 3,172.32-4,367.84-2,880.72

Finding the Fourth Proportional to 3,172.32, 4,367.84 and 2,880.72

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Solution

The fourth proportional to 3,172.32, 4,367.84 and 2,880.72 is: 3,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.32 : 4,367.84 = 2,880.72 : x
  2. Step 2: Convert to fraction form
    3,172.32/4,367.84 = 2,880.72/x
  3. Step 3: Cross multiply
    3,172.32x = 4,367.84 × 2,880.72
  4. Step 4: Simplify right side
    3,172.32x = 12,582,524.04
  5. Step 5: Solve for x
    x = 12,582,524.04/3,172.32
  6. Step 6: Final answer
    x = 3,966.35

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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.