Home / 3,777.12-5,664.60-1,311.30

Finding the Fourth Proportional to 3,777.12, 5,664.60 and 1,311.30

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Solution

The fourth proportional to 3,777.12, 5,664.60 and 1,311.30 is: 1,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.12 : 5,664.60 = 1,311.30 : x
  2. Step 2: Convert to fraction form
    3,777.12/5,664.60 = 1,311.30/x
  3. Step 3: Cross multiply
    3,777.12x = 5,664.60 × 1,311.30
  4. Step 4: Simplify right side
    3,777.12x = 7,427,989.98
  5. Step 5: Solve for x
    x = 7,427,989.98/3,777.12
  6. Step 6: Final answer
    x = 1,966.58

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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.