Home / 5,478.30-8,213.67-1,966.68

Finding the Fourth Proportional to 5,478.30, 8,213.67 and 1,966.68

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Solution

The fourth proportional to 5,478.30, 8,213.67 and 1,966.68 is: 2,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.30 : 8,213.67 = 1,966.68 : x
  2. Step 2: Convert to fraction form
    5,478.30/8,213.67 = 1,966.68/x
  3. Step 3: Cross multiply
    5,478.30x = 8,213.67 × 1,966.68
  4. Step 4: Simplify right side
    5,478.30x = 16,153,660.52
  5. Step 5: Solve for x
    x = 16,153,660.52/5,478.30
  6. Step 6: Final answer
    x = 2,948.66

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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.