Home / 3,789.72-5,685.30-1,157.40

Finding the Fourth Proportional to 3,789.72, 5,685.30 and 1,157.40

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Solution

The fourth proportional to 3,789.72, 5,685.30 and 1,157.40 is: 1,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.72 : 5,685.30 = 1,157.40 : x
  2. Step 2: Convert to fraction form
    3,789.72/5,685.30 = 1,157.40/x
  3. Step 3: Cross multiply
    3,789.72x = 5,685.30 × 1,157.40
  4. Step 4: Simplify right side
    3,789.72x = 6,580,166.22
  5. Step 5: Solve for x
    x = 6,580,166.22/3,789.72
  6. Step 6: Final answer
    x = 1,736.32

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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.