Home / 5,479.65-8,217.45-2,705.40

Finding the Fourth Proportional to 5,479.65, 8,217.45 and 2,705.40

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Solution

The fourth proportional to 5,479.65, 8,217.45 and 2,705.40 is: 4,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.65 : 8,217.45 = 2,705.40 : x
  2. Step 2: Convert to fraction form
    5,479.65/8,217.45 = 2,705.40/x
  3. Step 3: Cross multiply
    5,479.65x = 8,217.45 × 2,705.40
  4. Step 4: Simplify right side
    5,479.65x = 22,231,489.23
  5. Step 5: Solve for x
    x = 22,231,489.23/5,479.65
  6. Step 6: Final answer
    x = 4,057.10

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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.