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Finding the Fourth Proportional to 7,079.69, 9,765.81 and 4,428.41

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Solution

The fourth proportional to 7,079.69, 9,765.81 and 4,428.41 is: 6,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.69 : 9,765.81 = 4,428.41 : x
  2. Step 2: Convert to fraction form
    7,079.69/9,765.81 = 4,428.41/x
  3. Step 3: Cross multiply
    7,079.69x = 9,765.81 × 4,428.41
  4. Step 4: Simplify right side
    7,079.69x = 43,247,010.66
  5. Step 5: Solve for x
    x = 43,247,010.66/7,079.69
  6. Step 6: Final answer
    x = 6,108.60

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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.