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Finding the Fourth Proportional to 7,750.29, 10,695.11 and 4,213.51

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Solution

The fourth proportional to 7,750.29, 10,695.11 and 4,213.51 is: 5,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.29 : 10,695.11 = 4,213.51 : x
  2. Step 2: Convert to fraction form
    7,750.29/10,695.11 = 4,213.51/x
  3. Step 3: Cross multiply
    7,750.29x = 10,695.11 × 4,213.51
  4. Step 4: Simplify right side
    7,750.29x = 45,063,905.13
  5. Step 5: Solve for x
    x = 45,063,905.13/7,750.29
  6. Step 6: Final answer
    x = 5,814.48

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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.