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Finding the Fourth Proportional to 7,707.66, 10,632.47 and 5,185.47

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Solution

The fourth proportional to 7,707.66, 10,632.47 and 5,185.47 is: 7,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,707.66 : 10,632.47 = 5,185.47 : x
  2. Step 2: Convert to fraction form
    7,707.66/10,632.47 = 5,185.47/x
  3. Step 3: Cross multiply
    7,707.66x = 10,632.47 × 5,185.47
  4. Step 4: Simplify right side
    7,707.66x = 55,134,308.35
  5. Step 5: Solve for x
    x = 55,134,308.35/7,707.66
  6. Step 6: Final answer
    x = 7,153.19

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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.