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Finding the Fourth Proportional to 4,991.16, 6,887.81 and 2,867.10

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Solution

The fourth proportional to 4,991.16, 6,887.81 and 2,867.10 is: 3,956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.16 : 6,887.81 = 2,867.10 : x
  2. Step 2: Convert to fraction form
    4,991.16/6,887.81 = 2,867.10/x
  3. Step 3: Cross multiply
    4,991.16x = 6,887.81 × 2,867.10
  4. Step 4: Simplify right side
    4,991.16x = 19,748,074.47
  5. Step 5: Solve for x
    x = 19,748,074.47/4,991.16
  6. Step 6: Final answer
    x = 3,956.61

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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.