Home / 7,864.55-11,795.20-3,479.21

Finding the Fourth Proportional to 7,864.55, 11,795.20 and 3,479.21

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Solution

The fourth proportional to 7,864.55, 11,795.20 and 3,479.21 is: 5,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.55 : 11,795.20 = 3,479.21 : x
  2. Step 2: Convert to fraction form
    7,864.55/11,795.20 = 3,479.21/x
  3. Step 3: Cross multiply
    7,864.55x = 11,795.20 × 3,479.21
  4. Step 4: Simplify right side
    7,864.55x = 41,037,901.42
  5. Step 5: Solve for x
    x = 41,037,901.42/7,864.55
  6. Step 6: Final answer
    x = 5,218.09

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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.