Home / 4,847.10-6,690-3,168.78

Finding the Fourth Proportional to 4,847.10, 6,690 and 3,168.78

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Solution

The fourth proportional to 4,847.10, 6,690 and 3,168.78 is: 4,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,847.10 : 6,690 = 3,168.78 : x
  2. Step 2: Convert to fraction form
    4,847.10/6,690 = 3,168.78/x
  3. Step 3: Cross multiply
    4,847.10x = 6,690 × 3,168.78
  4. Step 4: Simplify right side
    4,847.10x = 21,199,138.20
  5. Step 5: Solve for x
    x = 21,199,138.20/4,847.10
  6. Step 6: Final answer
    x = 4,373.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.