Home / 3,840.20-5,760.30-1,651.40

Finding the Fourth Proportional to 3,840.20, 5,760.30 and 1,651.40

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Solution

The fourth proportional to 3,840.20, 5,760.30 and 1,651.40 is: 2,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.20 : 5,760.30 = 1,651.40 : x
  2. Step 2: Convert to fraction form
    3,840.20/5,760.30 = 1,651.40/x
  3. Step 3: Cross multiply
    3,840.20x = 5,760.30 × 1,651.40
  4. Step 4: Simplify right side
    3,840.20x = 9,512,559.42
  5. Step 5: Solve for x
    x = 9,512,559.42/3,840.20
  6. Step 6: Final answer
    x = 2,477.10

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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.