Home / 4,478.45-6,717.64-1,191.78

Finding the Fourth Proportional to 4,478.45, 6,717.64 and 1,191.78

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Solution

The fourth proportional to 4,478.45, 6,717.64 and 1,191.78 is: 1,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.45 : 6,717.64 = 1,191.78 : x
  2. Step 2: Convert to fraction form
    4,478.45/6,717.64 = 1,191.78/x
  3. Step 3: Cross multiply
    4,478.45x = 6,717.64 × 1,191.78
  4. Step 4: Simplify right side
    4,478.45x = 8,005,949.00
  5. Step 5: Solve for x
    x = 8,005,949.00/4,478.45
  6. Step 6: Final answer
    x = 1,787.66

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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.