Home / 6,911.26-10,366.84-1,980.90

Finding the Fourth Proportional to 6,911.26, 10,366.84 and 1,980.90

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Solution

The fourth proportional to 6,911.26, 10,366.84 and 1,980.90 is: 2,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.26 : 10,366.84 = 1,980.90 : x
  2. Step 2: Convert to fraction form
    6,911.26/10,366.84 = 1,980.90/x
  3. Step 3: Cross multiply
    6,911.26x = 10,366.84 × 1,980.90
  4. Step 4: Simplify right side
    6,911.26x = 20,535,663.45
  5. Step 5: Solve for x
    x = 20,535,663.45/6,911.26
  6. Step 6: Final answer
    x = 2,971.34

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Similar ratio
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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.