Home / 6,909.49-10,364.58-1,979.85

Finding the Fourth Proportional to 6,909.49, 10,364.58 and 1,979.85

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Solution

The fourth proportional to 6,909.49, 10,364.58 and 1,979.85 is: 2,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.49 : 10,364.58 = 1,979.85 : x
  2. Step 2: Convert to fraction form
    6,909.49/10,364.58 = 1,979.85/x
  3. Step 3: Cross multiply
    6,909.49x = 10,364.58 × 1,979.85
  4. Step 4: Simplify right side
    6,909.49x = 20,520,287.80
  5. Step 5: Solve for x
    x = 20,520,287.80/6,909.49
  6. Step 6: Final answer
    x = 2,969.87

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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.