Home / 3,430.91-5,147.12-1,091.63

Finding the Fourth Proportional to 3,430.91, 5,147.12 and 1,091.63

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Solution

The fourth proportional to 3,430.91, 5,147.12 and 1,091.63 is: 1,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.91 : 5,147.12 = 1,091.63 : x
  2. Step 2: Convert to fraction form
    3,430.91/5,147.12 = 1,091.63/x
  3. Step 3: Cross multiply
    3,430.91x = 5,147.12 × 1,091.63
  4. Step 4: Simplify right side
    3,430.91x = 5,618,766.20
  5. Step 5: Solve for x
    x = 5,618,766.20/3,430.91
  6. Step 6: Final answer
    x = 1,637.69

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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.