Home / 6,919.40-10,346.70-5,169.80

Finding the Fourth Proportional to 6,919.40, 10,346.70 and 5,169.80

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Solution

The fourth proportional to 6,919.40, 10,346.70 and 5,169.80 is: 7,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.40 : 10,346.70 = 5,169.80 : x
  2. Step 2: Convert to fraction form
    6,919.40/10,346.70 = 5,169.80/x
  3. Step 3: Cross multiply
    6,919.40x = 10,346.70 × 5,169.80
  4. Step 4: Simplify right side
    6,919.40x = 53,490,369.66
  5. Step 5: Solve for x
    x = 53,490,369.66/6,919.40
  6. Step 6: Final answer
    x = 7,730.49

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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.