Home / 6,909.80-10,364.70-5,181.80

Finding the Fourth Proportional to 6,909.80, 10,364.70 and 5,181.80

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Solution

The fourth proportional to 6,909.80, 10,364.70 and 5,181.80 is: 7,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.80 : 10,364.70 = 5,181.80 : x
  2. Step 2: Convert to fraction form
    6,909.80/10,364.70 = 5,181.80/x
  3. Step 3: Cross multiply
    6,909.80x = 10,364.70 × 5,181.80
  4. Step 4: Simplify right side
    6,909.80x = 53,707,802.46
  5. Step 5: Solve for x
    x = 53,707,802.46/6,909.80
  6. Step 6: Final answer
    x = 7,772.70

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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.