Home / 5,479.90-8,220.12-2,671.31

Finding the Fourth Proportional to 5,479.90, 8,220.12 and 2,671.31

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Solution

The fourth proportional to 5,479.90, 8,220.12 and 2,671.31 is: 4,007.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.90 : 8,220.12 = 2,671.31 : x
  2. Step 2: Convert to fraction form
    5,479.90/8,220.12 = 2,671.31/x
  3. Step 3: Cross multiply
    5,479.90x = 8,220.12 × 2,671.31
  4. Step 4: Simplify right side
    5,479.90x = 21,958,499.29
  5. Step 5: Solve for x
    x = 21,958,499.29/5,479.90
  6. Step 6: Final answer
    x = 4,007.10

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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.