Home / 7,739.69-10,680.78-4,202.90

Finding the Fourth Proportional to 7,739.69, 10,680.78 and 4,202.90

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Solution

The fourth proportional to 7,739.69, 10,680.78 and 4,202.90 is: 5,800.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.69 : 10,680.78 = 4,202.90 : x
  2. Step 2: Convert to fraction form
    7,739.69/10,680.78 = 4,202.90/x
  3. Step 3: Cross multiply
    7,739.69x = 10,680.78 × 4,202.90
  4. Step 4: Simplify right side
    7,739.69x = 44,890,250.26
  5. Step 5: Solve for x
    x = 44,890,250.26/7,739.69
  6. Step 6: Final answer
    x = 5,800.01

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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.