Home / 2,972.55-4,102.81-1,977.87

Finding the Fourth Proportional to 2,972.55, 4,102.81 and 1,977.87

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Solution

The fourth proportional to 2,972.55, 4,102.81 and 1,977.87 is: 2,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.55 : 4,102.81 = 1,977.87 : x
  2. Step 2: Convert to fraction form
    2,972.55/4,102.81 = 1,977.87/x
  3. Step 3: Cross multiply
    2,972.55x = 4,102.81 × 1,977.87
  4. Step 4: Simplify right side
    2,972.55x = 8,114,824.81
  5. Step 5: Solve for x
    x = 8,114,824.81/2,972.55
  6. Step 6: Final answer
    x = 2,729.92

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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.