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Finding the Fourth Proportional to 7,065.84, 9,750.68 and 3,879.15

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Solution

The fourth proportional to 7,065.84, 9,750.68 and 3,879.15 is: 5,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.84 : 9,750.68 = 3,879.15 : x
  2. Step 2: Convert to fraction form
    7,065.84/9,750.68 = 3,879.15/x
  3. Step 3: Cross multiply
    7,065.84x = 9,750.68 × 3,879.15
  4. Step 4: Simplify right side
    7,065.84x = 37,824,330.93
  5. Step 5: Solve for x
    x = 37,824,330.93/7,065.84
  6. Step 6: Final answer
    x = 5,353.13

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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.