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Finding the Fourth Proportional to 7,698.99, 10,608.91 and 5,309.70

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Solution

The fourth proportional to 7,698.99, 10,608.91 and 5,309.70 is: 7,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,698.99 : 10,608.91 = 5,309.70 : x
  2. Step 2: Convert to fraction form
    7,698.99/10,608.91 = 5,309.70/x
  3. Step 3: Cross multiply
    7,698.99x = 10,608.91 × 5,309.70
  4. Step 4: Simplify right side
    7,698.99x = 56,330,129.43
  5. Step 5: Solve for x
    x = 56,330,129.43/7,698.99
  6. Step 6: Final answer
    x = 7,316.56

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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.