Home / 2,749.02-3,792.87-2,157.72

Finding the Fourth Proportional to 2,749.02, 3,792.87 and 2,157.72

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Solution

The fourth proportional to 2,749.02, 3,792.87 and 2,157.72 is: 2,977.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.02 : 3,792.87 = 2,157.72 : x
  2. Step 2: Convert to fraction form
    2,749.02/3,792.87 = 2,157.72/x
  3. Step 3: Cross multiply
    2,749.02x = 3,792.87 × 2,157.72
  4. Step 4: Simplify right side
    2,749.02x = 8,183,951.46
  5. Step 5: Solve for x
    x = 8,183,951.46/2,749.02
  6. Step 6: Final answer
    x = 2,977.04

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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.