Home / 5,478.27-8,217.51-1,780.50

Finding the Fourth Proportional to 5,478.27, 8,217.51 and 1,780.50

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Solution

The fourth proportional to 5,478.27, 8,217.51 and 1,780.50 is: 2,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.27 : 8,217.51 = 1,780.50 : x
  2. Step 2: Convert to fraction form
    5,478.27/8,217.51 = 1,780.50/x
  3. Step 3: Cross multiply
    5,478.27x = 8,217.51 × 1,780.50
  4. Step 4: Simplify right side
    5,478.27x = 14,631,276.56
  5. Step 5: Solve for x
    x = 14,631,276.56/5,478.27
  6. Step 6: Final answer
    x = 2,670.78

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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.