Home / 5,191.51-7,789.98-3,115.69

Finding the Fourth Proportional to 5,191.51, 7,789.98 and 3,115.69

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Solution

The fourth proportional to 5,191.51, 7,789.98 and 3,115.69 is: 4,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.51 : 7,789.98 = 3,115.69 : x
  2. Step 2: Convert to fraction form
    5,191.51/7,789.98 = 3,115.69/x
  3. Step 3: Cross multiply
    5,191.51x = 7,789.98 × 3,115.69
  4. Step 4: Simplify right side
    5,191.51x = 24,271,162.79
  5. Step 5: Solve for x
    x = 24,271,162.79/5,191.51
  6. Step 6: Final answer
    x = 4,675.16

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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.