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Finding the Fourth Proportional to 4,867.64, 6,717.87 and 2,980.49

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Solution

The fourth proportional to 4,867.64, 6,717.87 and 2,980.49 is: 4,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,867.64 : 6,717.87 = 2,980.49 : x
  2. Step 2: Convert to fraction form
    4,867.64/6,717.87 = 2,980.49/x
  3. Step 3: Cross multiply
    4,867.64x = 6,717.87 × 2,980.49
  4. Step 4: Simplify right side
    4,867.64x = 20,022,529.45
  5. Step 5: Solve for x
    x = 20,022,529.45/4,867.64
  6. Step 6: Final answer
    x = 4,113.40

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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.