Home / 6,975.60-9,626.40-3,991.80

Finding the Fourth Proportional to 6,975.60, 9,626.40 and 3,991.80

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Solution

The fourth proportional to 6,975.60, 9,626.40 and 3,991.80 is: 5,508.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,975.60 : 9,626.40 = 3,991.80 : x
  2. Step 2: Convert to fraction form
    6,975.60/9,626.40 = 3,991.80/x
  3. Step 3: Cross multiply
    6,975.60x = 9,626.40 × 3,991.80
  4. Step 4: Simplify right side
    6,975.60x = 38,426,663.52
  5. Step 5: Solve for x
    x = 38,426,663.52/6,975.60
  6. Step 6: Final answer
    x = 5,508.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.