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Finding the Fourth Proportional to 3,889, 5,366.91 and 2,210.14

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Solution

The fourth proportional to 3,889, 5,366.91 and 2,210.14 is: 3,050.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889 : 5,366.91 = 2,210.14 : x
  2. Step 2: Convert to fraction form
    3,889/5,366.91 = 2,210.14/x
  3. Step 3: Cross multiply
    3,889x = 5,366.91 × 2,210.14
  4. Step 4: Simplify right side
    3,889x = 11,861,622.47
  5. Step 5: Solve for x
    x = 11,861,622.47/3,889
  6. Step 6: Final answer
    x = 3,050.04

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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.