Home / 3,780.36-5,670.55-1,147.89

Finding the Fourth Proportional to 3,780.36, 5,670.55 and 1,147.89

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Solution

The fourth proportional to 3,780.36, 5,670.55 and 1,147.89 is: 1,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.36 : 5,670.55 = 1,147.89 : x
  2. Step 2: Convert to fraction form
    3,780.36/5,670.55 = 1,147.89/x
  3. Step 3: Cross multiply
    3,780.36x = 5,670.55 × 1,147.89
  4. Step 4: Simplify right side
    3,780.36x = 6,509,147.81
  5. Step 5: Solve for x
    x = 6,509,147.81/3,780.36
  6. Step 6: Final answer
    x = 1,721.83

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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.