Home / 2,772.32-4,157.36-2,156.72

Finding the Fourth Proportional to 2,772.32, 4,157.36 and 2,156.72

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Solution

The fourth proportional to 2,772.32, 4,157.36 and 2,156.72 is: 3,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.32 : 4,157.36 = 2,156.72 : x
  2. Step 2: Convert to fraction form
    2,772.32/4,157.36 = 2,156.72/x
  3. Step 3: Cross multiply
    2,772.32x = 4,157.36 × 2,156.72
  4. Step 4: Simplify right side
    2,772.32x = 8,966,261.46
  5. Step 5: Solve for x
    x = 8,966,261.46/2,772.32
  6. Step 6: Final answer
    x = 3,234.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.