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Finding the Fourth Proportional to 4,887, 6,720.84 and 3,880.44

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Solution

The fourth proportional to 4,887, 6,720.84 and 3,880.44 is: 5,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,887 : 6,720.84 = 3,880.44 : x
  2. Step 2: Convert to fraction form
    4,887/6,720.84 = 3,880.44/x
  3. Step 3: Cross multiply
    4,887x = 6,720.84 × 3,880.44
  4. Step 4: Simplify right side
    4,887x = 26,079,816.37
  5. Step 5: Solve for x
    x = 26,079,816.37/4,887
  6. Step 6: Final answer
    x = 5,336.57

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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.