Home / 7,864.79-11,795.57-3,479.45

Finding the Fourth Proportional to 7,864.79, 11,795.57 and 3,479.45

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Solution

The fourth proportional to 7,864.79, 11,795.57 and 3,479.45 is: 5,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.79 : 11,795.57 = 3,479.45 : x
  2. Step 2: Convert to fraction form
    7,864.79/11,795.57 = 3,479.45/x
  3. Step 3: Cross multiply
    7,864.79x = 11,795.57 × 3,479.45
  4. Step 4: Simplify right side
    7,864.79x = 41,042,108.13
  5. Step 5: Solve for x
    x = 41,042,108.13/7,864.79
  6. Step 6: Final answer
    x = 5,218.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.