Home / 5,478.66-8,221.65-2,015.91

Finding the Fourth Proportional to 5,478.66, 8,221.65 and 2,015.91

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Solution

The fourth proportional to 5,478.66, 8,221.65 and 2,015.91 is: 3,025.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.66 : 8,221.65 = 2,015.91 : x
  2. Step 2: Convert to fraction form
    5,478.66/8,221.65 = 2,015.91/x
  3. Step 3: Cross multiply
    5,478.66x = 8,221.65 × 2,015.91
  4. Step 4: Simplify right side
    5,478.66x = 16,574,106.45
  5. Step 5: Solve for x
    x = 16,574,106.45/5,478.66
  6. Step 6: Final answer
    x = 3,025.21

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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.